Chongqing Medical University, Children's Hospital, Department of Neonatology, Fudan University - Department of Neonatology, Xiamen University, Nanjing Medical University, Fujian Medical University, Anhui Medical University, Jiangxi Maternal and Child Health Hospital, Jiangxi Maternal and Child Health Hospital, Jiangxi Maternal and Child Health Hospital, Chongqing Medical University - Department of Neonatology, Fudan University and Chongqing Medical University