1. Department of Obstetrics and Gynecology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China; 2. Department of Obstetrics and Gynecology, Women and Children’s Health Care Hospital of Linyi, Shandong, Linyi 276000, China
Online:2017-10-28
Published:2017-11-01
Supported by:
National Natural Science Foundation of China, 81550008