Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, China
HuiQing Ding
Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, China
Hui Yan
Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, China
Fubin Zhang
Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, China
Ni Wang
Corresponding author. Department of Obstetrics and Gynecology, Wuxi People's Hospital Affiliated to Nanjing Medical University, 299 Qingyang Road, Wuxi 214023, China.; Department of Obstetrics and Gynecology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
