[Pan, Xiongfeng; Luo, Jiayou] Hunan Childrens Hosp, Pediat Res Inst Hunan Prov, Changsha, Peoples R China.
[Pan, Xiongfeng; Luo, Jiayou; Yao, Zhenzhen; Luo, Miyang; Dai, Wen; Xiao, Xiang; Wei, Jia; Duan, Yamei; Ouyang, Sisi; Liu, Yixu] Cent South Univ, Xiangya Sch Publ Hlth, Dept Maternal & Child Hlth, Changsha, Peoples R China.
[Luo, Miyang] Cent South Univ, Xiangya Sch Publ Hlth, Dept Epidemiol & Hlth Stat, Changsha, Peoples R China.
[Luo, Miyang] Natl Univ Singapore, Saw Swee Hock Sch Publ Hlth, Singapore, Singapore.
[Kaminga, Atipatsa C.] Mzuzu Univ, Dept Math & Stat, Mzuzu, Malawi.