[Liu, Shengyun; Zhang, Yuqi; Li, Wei; Li, Tianfang] Zhengzhou Univ, Affiliated Hosp 1, Dept Rheumatol, 1 Jianshe East Rd, Zhengzhou 450052, Henan, Peoples R China.
[Wang, Yan] Zhengzhou Univ, Affiliated Hosp 1, Dept Resp & Crit Care Med, 1 Jianshe East Rd, Zhengzhou 450052, Henan, Peoples R China.
[He, Feng; Liu, Zhuo] Capital Inst Pediat, Dept Biochem & Immunol, 2 Yabao Rd, Beijing 100020, Peoples R China.
[Dong, Jie] Hunan Childrens Hosp, Pediat Res Inst Hunan Prov, Changsha, Peoples R China.
[Chen, En] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Lab Med, Hengyang 421001, Hunan, Peoples R China.