1. Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
2. Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
3. Reproductive Medicine Center, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
4. Department of Urology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China