1. Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing 100191 , China
2. Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies Peking University , Beijing 100871 , China
3. National Clinical Research Center for Obstetrics and Gynecology (Peking University Third Hospital) , Beijing 100191 , China
4. Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing 100191 , China
5. Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology , Beijing 100191 , China
6. Research Units of Comprehensive Diagnosis and Treatment of Oocyte Maturation Arrest, Chinese Academy of Medical Sciences , Beijing 100191 , China