1. Center for Reproductive Medicine and Obstetrics and Gynecology , Nanjing Drum Tower Hospital, , Nanjing , China
2. Nanjing University Medical School , Nanjing Drum Tower Hospital, , Nanjing , China
3. Center for Molecular Reproductive Medicine, Nanjing University , Nanjing , China
4. Nanjing Vocational Health College , Nanjing , China
5. State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University , Nanjing , China