Guangdong Provincial People's Hospital, Guanzhou, Guangdong, China
Guangdong maternal and Child Health Hospital, Guangzhou, Guangdong, China
Shijiazhuang maternity hospital, Shijiazhuang, Hebei, China
Li Chunrui, Wuhan, Hubei, China
Department of Biliary and Pancreatic Surgery, Tongji Hospital, Affiliated Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
Tongji Hospital, Wuhan, Hubei, China
Department of Biliary and Pancreatic Surgery, Tongji Hospital, Affiliated Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
Tongji Hospital, Wuhan, Hubei, China
Tongji Hospital, Wuhan, Hubei, China
TongjiHospital, Wuhan, Hubei, China
TongjiHospital, Wuhan, Hubei, China
Fuzhou Children's Hospital of Fujian Medical University, Fuzhou, Fujian, China
Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, China
Children's Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China