1. Assisted Reproduction Unit Department of Obstetrics and Gynecology Sir Run Run Shaw Hospital School of Medicine Zhejiang University Hangzhou China
2. Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province Hangzhou China
3. Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐Xiangya Changsha China
4. Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering Central South University Changsha China
5. Life Sciences Institute Zhejiang University Hangzhou China
6. Department of Epidemiology Center for Global Health School of Public Health Nanjing Medical University Nanjing China