Institution: | 1. Reproductive Medical Center, Department of Obstetrics and Gynaecology, Peking University Third Hospital, No. 49 HuaYuan Bei Road, HaiDian District, Beijing, 100191, P.R. China;2. Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, China;3. Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction, Beijing, China |