title: Epidemiologic survey on hospitalized neonates in China.
abstract: OBJECTIVE
  To carry out a nationwide epidemiologic survey on the neonates in urban hospitals with an attempt to understand the disease spectrum and treatment outcomes of hospitalized neonates in China.
  
  
  METHODS
  The clinical data of 43,289 hospitalized neonates from 86 hospitals in 47 Chinese cities (22 provinces) between January 1, 2005 and December 31, 2005 were retrospectively analyzed.
  
  
  RESULTS
  The male:female ratio was 1.73:1. Premature infants accounted for 26.2% of the hospitalized neonates, which was higher than that reported in 2002 (19.7%). The top three diseases during the neonatal period were jaundice, pneumonia, and hypoxic-ischemic encephalopathy. The incidences of pneumonia, meconium aspiration syndrome, and bilirubin encephalopathy in term infants were higher than those in premature infants, while the incidences of asphyxia, respiratory distress syndrome, and pulmonary hemorrhage in term infants were lower than those in premature infants. The incidences of asphyxia, small for gestational age infant, and wet lung were higher in neonates whose mother had pregnancy induced hypertension. The outcomes of these hospitalized neonates included: recovered, 63.9%; improved, 27.3%; discharged due to the family's own decisions, 7.6%, and died, 1.2%. Nearly half (46.4%) of the neonatal death occurred within 24 hrs after admission.
  
  
  CONCLUSIONS
  The incidence of premature birth shows an increasing trend among hospitalized neonates. Since the neonatal deaths mainly occur within 24 hrs after admission, monitoring during this period should be enhanced.
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ke-Lun
authors.initials: KL
authors.lastname: Wei
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yu-Jia
authors.initials: YJ
authors.lastname: Yang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yu-Jia
authors.initials: YJ
authors.lastname: Yao
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Li-Zhong
authors.initials: LZ
authors.lastname: Du
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Qing-Hong
authors.initials: QH
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Rui-Hua
authors.initials: RH
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ying
authors.initials: Y
authors.lastname: Lin
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiao-Lei
authors.initials: XL
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Hong-Min
authors.initials: HM
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Kai
authors.initials: K
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yin
authors.initials: Y
authors.lastname: Chen
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiao-Yun
authors.initials: XY
authors.lastname: Zhong
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jia-Lin
authors.initials: JL
authors.lastname: Yu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Qiu
authors.initials: Q
authors.lastname: Tan
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yu-Chun
authors.initials: YC
authors.lastname: Huang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ji-Mei
authors.initials: JM
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Bin
authors.initials: B
authors.lastname: Yi
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Shao-Han
authors.initials: SH
authors.lastname: Nong
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiong
authors.initials: X
authors.lastname: Song
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xian-Zhi
authors.initials: XZ
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jian-Pu
authors.initials: JP
authors.lastname: Lai
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: You-Xiang
authors.initials: YX
authors.lastname: Zhang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Qi-Liang
authors.initials: QL
authors.lastname: Cui
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: You-De
authors.initials: YD
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Lin
authors.initials: L
authors.lastname: Shi
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiu-Feng
authors.initials: XF
authors.lastname: Guo
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Shao-Li
authors.initials: SL
authors.lastname: Guo
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Li
authors.initials: L
authors.lastname: Yao
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Mei
authors.initials: M
authors.lastname: Hong
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Shi-Wen
authors.initials: SW
authors.lastname: Xia
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xi-Rong
authors.initials: XR
authors.lastname: Gao
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Lin-Xia
authors.initials: LX
authors.lastname: Cheng
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yun
authors.initials: Y
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Hong-Yun
authors.initials: HY
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Dong-Yan
authors.initials: DY
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Qing-Zhi
authors.initials: QZ
authors.lastname: Meng
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiu-Rong
authors.initials: XR
authors.lastname: Mu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Qi-Xin
authors.initials: QX
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Chao-Ying
authors.initials: CY
authors.lastname: Yan
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Guo-Sheng
authors.initials: GS
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jun-Ying
authors.initials: JY
authors.lastname: Xie
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Dawuti
authors.initials: D
authors.lastname: Muheter
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jing
authors.initials: J
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Li-Xing
authors.initials: LX
authors.lastname: Lin
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jia-Hui
authors.initials: JH
authors.lastname: Xu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Bai-Li
authors.initials: BL
authors.lastname: Zhao
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jing-Hua
authors.initials: JH
authors.lastname: Zhang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ying
authors.initials: Y
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiao
authors.initials: X
authors.lastname: Chen
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ruo-Bing
authors.initials: RB
authors.lastname: Shan
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Zu-Hui
authors.initials: ZH
authors.lastname: Huang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xia
authors.initials: X
authors.lastname: Hu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Shu-Rong
authors.initials: SR
authors.lastname: Zhang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Zhen-Zhi
authors.initials: ZZ
authors.lastname: Ye
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ben-Qing
authors.initials: BQ
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Chang-Hui
authors.initials: CH
authors.lastname: Chen
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ying
authors.initials: Y
authors.lastname: Xiong
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yu-Min
authors.initials: YM
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Zhen-Ying
authors.initials: ZY
authors.lastname: Yang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jing
authors.initials: J
authors.lastname: Guo
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Li-Wen
authors.initials: LW
authors.lastname: Chang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Gao-Qiang
authors.initials: GQ
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xu-Jie
authors.initials: XJ
authors.lastname: Chen
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Han-Chu
authors.initials: HC
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Shu-Qun
authors.initials: SQ
authors.lastname: Yu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Yu-Hong
authors.initials: YH
authors.lastname: Cai
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiao-Hua
authors.initials: XH
authors.lastname: Chen
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Jian-Wu
authors.initials: JW
authors.lastname: Zeng
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ming-Xia
authors.initials: MX
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Gao-Qiang
authors.initials: GQ
authors.lastname: Wu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ming-Zhu
authors.initials: MZ
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Long
authors.initials: L
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Fu
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: An-Ying
authors.initials: AY
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Hong
authors.initials: H
authors.lastname: Xiong
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Xiu-Yong
authors.initials: XY
authors.lastname: Cheng
authors.affiliation: 1 Department of Pediatrics, China Medical University Affiliated Shengjing Hospital; 2 Department of Pediatrics, Central South University Affiliated Xiangya Hospital; 3 Department of Pediatrics, Sichuan University Affiliated West China Second Hospital; 4 Zhejiang University School of Medicine Affiliated Children's Hospital; 5 Beihai Maternal and Child Health Care Hospital; 6 Beihai People's Hospital; 7 Beijing Children's Hospital Emergency Center; 8 Capital University of Medical Sciences Affiliated Beijing Obstetrics&Gynecology Hospital; 9 Chengdu Children's Hospital/Chengdu Children's Emergency Center; 10 Chongqing Fifth People's Hospital; 11 Chongqing Fulin District Maternal and Child Health Care Hospital; 12 Chongqing Maternal and Child Health Care Hospital; 13 Chongqing Medical University Affiliated Children's Hospital; 14 Chongqing Three Gorge Central Hospital Children Health Care Center; 15 Dalian Children's Hospital; 16 Fudan University Affiliated Children's Hospital; 17 Fudan University Affiliated Obstetrics & Gynecology Hospital; 18 Gansu Maternal and Child Health Care Hospital; 19 Guangdong People's Hospital; 20 Guangi Minzu Hospital; 21 Guangxi Children's Hospital; 22 Guangxi Maternal and Child Health Care Hospital; 23 Guangzhou Children's Hospital; 24 Guangzhou NO.1 People's Hospital; 25 Guangzhou NO.2 People's Hospital; 26 Guiyang Maternal and Child Health Care Hospital; 27 Haikou Maternal and Child Health Care Hospital; 28 Hainan Maternal and Child Health Care Hospital; 29 Hainan Medical College Affiliated Hospital; 30 Harbin Medical University Affiliated Second Hospital; 31 Hölün Buyer Maternal and Child Health Care Hospital; 32 Hubei Maternal and Child Health Care Hospital; 33 Hunan Children's Hospital; 34 Hunan Maternal and Child Health Care Hospital; 35 Hunan People's Hospital; 36 Inner Mongolia Maternal and Child Health Care Hospital; 37 Jiamusi University Affiliated First Hospital; 38 Jiaozuo Maternal and Child Health Care Hospital; 39 Jiaxi Chi
authors.forename: Zhi-Qiong
authors.initials: ZQ
authors.lastname: Cheng
keywords: Epidemiological survey; hospitalization; neonates
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