| Authors: |
Yang H; Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China., Li XC; Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China., Yao C; Department of Biostatistics, Peking University Clinical Research Institute, Peking University First Hospital, Beijing 100871, China., Lang JH; Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China., Jin HM; Department of Obstetrics and Gynecology, Zhejiang University Affiliated Obstetrics and Gynecology Hospital, Zhejiang, Hangzhou 310006, China., Xi MR; Department of Obstetrics and Gynecology, West China Second Hospital of Sichuan University, Chengdu, Sichuan 610041, China., Wang G; Department of Obstetrics and Gynecology, The First People's Hospital of Foshan City, Foshan, Guangdong 528010, China., Wang LW; Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Henan Province, Zhengzhou, Henan 450052, China., Hao M; Department of Obstetrics and Gynecology, The Second Hospital of Shanxi Medical University, Datong, Shanxi 030001, China., Ding Y; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xinjiang Medical University, Urumchi, Xinjiang 830000, China., Chen J; Department of Obstetrics and Gynecology, People's Hospital of Fujian Province, Fuzhou, Fujian 350000, China., Zhang JQ; Department of Obstetrics and Gynecology, Qinghai Red Cross Hospital, Xining, Qinghai 810000, China., Han L; Department of Obstetrics and Gynecology, Dalian Maternity Hospital, Dalian, Liaoning 116021, China., Guo CX; Department of Obstetrics and Gynecology, Tianjin Central Maternity Hospital, Tianjin 300100, China., Xue X; Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China., Li Y; Department of Obstetrics and Gynecology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750003, China., Zheng JH; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150007, China., Cui MH; Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin 130041, China., Li HF; Department of Obstetrics and Gynecology, Shanghai Tongji Hospital, Shanghai 200065, China., Tao GS; Department of Obstetrics and Gynecology, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410008, China., Chen L; Department of Obstetrics and Gynecology, Qingdao Municipal Hospital, Qingdao, Shandong 266011, China., Wang SM; Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Nanjing, Nanjing, Jiangsu 210004, China., Lu AW; Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Guiyang City, Guiyang, Guizhou 550001, China., Huang ZH; Department of Obstetrics and Gynecology, Union Hospital Tongji Medical College Huazhong University of Science and Technology, Wuhan, Hubei 430022, China., Liu Q; Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Gansu Province, Lanzhou, Gansu 730050, China., Zhuang YL; Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Anhui Province, Hefei, Anhui 230011, China., Huang XH; Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050073, China., Zhu GH; Department of Obstetrics and Gynecology, Hainan Provincial People's Hospital, Haikou, Hainan 570311, China., Huang OP; Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Jiangxi Province, Nanchang, Jiangxi 330006, China., Hu LN; Department of Obstetrics and Gynecology, The Second Hospital Affiliated to Chongqing Medical University, Chongqing 400010, China., Li MJ; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China., Zhou HL; Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China., Song JH; Department of Obstetrics and Gynecology, Affiliated Hospital of Inner Mongolia Medical College, Hohhot, Inner Mongolia Autonomous Region 010050, China., Zhu L; Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China. |
