1. Reproductive Medicine Center, Zhoushan Maternal and Child Health Care Hospital, Zhoushan, Zhejiang, China.
2. Clinical Research Unit, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China.
3. Laboratory for Reproductive Immunology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China.
4. Shanghai Key Laboratory of Female Reproductive Endocrine-related Diseases, Shanghai, China.