1. Department of Reproduction Center, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, China
2. Department of Gynecology, The First People’s Hospital of Xiaoshan District, Hangzhou, China
3. Zhejiang Chinese Medical University, Hangzhou, China
4. Nanjing Medical University, Nanjing, China
5. Department of Reproductive Endocrinology Center, Hangzhou Women’s Hospital, Hangzhou, China