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. bstetrical Department, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
4. Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Ji’nan, Shandong, China