1. 1Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai, People’s Republic of China
2. 2Clinical Research Center, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, People’s Republic of China
3. 3Medical Center of Diagnosis and Treatment for Cervical and Intrauterine Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, People’s Republic of China
4. 4Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai, People’s Republic of China
5. 5Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Longgang District, Shenzhen, Guangdong Province, People’s Republic of China