1. Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
2. Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Peking University, Beijing 100191, China
3. Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
4. Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction, Beijing 100191, China
5. Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing 100191, China
6. Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, China
7. Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China