1. Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai 200080, P.R. China
2. Department of Gynecology, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai 200011, P.R. China
3. Department of Obstetrics and Gynecology, Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medicine School, Nanjing, Jiangsu 210000, P.R. China
4. Department of Gynecology, Changzhou No. 2 People's Hospital, Affiliated with Nanjing Medical University, Changzhou, Jiangsu�213003, P.R. China
5. Department of Clinical Laboratory, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai 200011, P.R. China
6. Department of Clinical Epidemiology, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai 200011, P.R. China