Zhan Rui-Xi, Lyu Xiao-Fang, Yin Ling, Shi Yang-Yang, He Ying-Dong
Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China.
Department of Obstetrics and Gynecology, Hebei Province Shi Jia Zhuang Maternity and Child Healthcare Hospital, Shijiazhuang, Hebei 050000, China.
Chin Med J (Engl). 2020 Nov 5;134(3):375-377. doi: 10.1097/CM9.0000000000001219.