[1] Xiamen Univ, Women & Childrens Hosp, Sch Med, Dept Neonatol, Xiamen 361003, Peoples R China
[2] Xiamen key Lab perinatal neonatal Infect, Xiamen, Peoples R China
[3] Xiamen Clin Res Ctr Perinatal Med, Xiamen, Peoples R China
[4] Guangzhou Med Univ, Affiliated Hosp 3, Dept Neonatol, Guangzhou 510150, Peoples R China
[5] Northwest Womens & Childrens Hosp, Dept Neonatol, Xian 710061, Shanxi, Peoples R China
[6] China Med Univ, Shengjing Hosp, Dept Neonatol, Shenyang 110004, Liaoning, Peoples R China
[7] Peking Univ Third Hosp, Dept Pediat, Beijing 100191, Peoples R China