1. Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
2. National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
3. Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing 100191, China
4. Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
5. Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Wuhan 430074, China
6. Obstetrical Department, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
7. National Center for Healthcare Quality Management in Obstetrics, Beijing 100191, China
8. Beijing Advanced Innovation Center for Genomics, Peking University, Beijing 100191, China
9. Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100191, China