title: Letter to the Editor.
authors.affiliation: Department of the First Clinical Medical College of Fujian Medical University, 350005, Fuzhou, Fujian, China. Electronic address: kesunflower@163.com.
authors.forename: Sunkui
authors.initials: S
authors.lastname: Ke
authors.affiliation: Zhongshan Hospital, Xiamen University, 361004, Xiamen, Fujian, China. Electronic address: seasonsun0881@sina.com.
authors.forename: Lan
authors.initials: L
authors.lastname: Chen
authors.affiliation: Zhongshan Hospital, Xiamen University, 361004, Xiamen, Fujian, China. Electronic address: dhb3100@sina.com.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Duan
authors.affiliation: Department of Thoracic surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China. Electronic address: 18959229186@163.com.
authors.forename: Yuanrong
authors.initials: Y
authors.lastname: Tu