[Zhao, Kunyan; Song, Fengmei; Yang, Fei; Tang, Yan] Univ South China, Sch Publ Hlth, Hunan Prov Key Lab Typ Environm Pollut & Hlth Haza, Hengyang 421001, Peoples R China.
[Wu, Mingyang] Cent South Univ, Xiangya Sch Publ Hlth, Dept Maternal & Child Hlth, Changsha 410007, Peoples R China.
[Qiu, Jun; Qiu, J; Pan, Xiongfeng; Liu, Caixia; Xiang, Shiting] Cent South Univ, Affiliated Childrens Hosp, Hunan Childrens Hosp, Pediat Res Inst Hunan Prov,Xiangya Sch Med, Changsha 410007, Peoples R China.
[Peng, Yunlong] Soochow Univ, Dept Epidemiol & Hlth Stat, Med Coll, Suzhou 215123, Peoples R China.
[Cao, Yunhui; Wu, Sha] Univ South China, Hengyang Med Sch, Dept Pediat, Hengyang 421001, Peoples R China.