title: Correspondence.
authors.affiliation: The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, 19 Renmin road, Zhengzhou, 450000, China. huangyanjie69@hotmail.com.
authors.forename: Yan-Jie
authors.initials: YJ
authors.lastname: Huang
authors.affiliation: The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, 19 Renmin road, Zhengzhou, 450000, China.
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Yang
authors.affiliation: The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, 19 Renmin road, Zhengzhou, 450000, China.
authors.forename: Wen-Sheng
authors.initials: WS
authors.lastname: Zhai
authors.affiliation: The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, 19 Renmin road, Zhengzhou, 450000, China.
authors.forename: Xian-Qing
authors.initials: XQ
authors.lastname: Ren
authors.affiliation: The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, 19 Renmin road, Zhengzhou, 450000, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Sun
authors.affiliation: The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, 19 Renmin road, Zhengzhou, 450000, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Ding
mesh_terms: D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D002681:China; D004359:Drug Therapy, Combination; D005260:Female; D005500:Follow-Up Studies; D005938:Glucocorticoids / Q000627:therapeutic use*; D006801:Humans; D011695:IgA Vasculitis / Q000175:diagnosis / Q000188:drug therapy*; D008297:Male; D008517:Phytotherapy / Q000379:methods*; D010936:Plant Extracts / Q000627:therapeutic use*; D012189:Retrospective Studies; D018570:Risk Assessment; D016896:Treatment Outcome; D029757:Tripterygium; D055815:Young Adult
chemical_list: D005938:Glucocorticoids; D010936:Plant Extracts