Affiliation: | 1. Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Peking University Third Hospital, Beijing, China;2. Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Peking University Third Hospital, Beijing, China Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China;3. Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Peking University Third Hospital, Beijing, China National Clinical Research Center for Obstetrics and Gynaecology, Beijing, China Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China;4. Unimed Biotech (Shanghai) Co., Ltd., Shanghai, China |