1. Department of Urology, Shanghai�General Hospital, Shanghai�Jiao Tong University School of Medicine, Shanghai�200080, P.R.�China
2. Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
3. Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai�200011, P.R. China
4. Department of Obstetrics and Gynecology, Shanghai�General Hospital, Shanghai�Jiao Tong University School of Medicine, Shanghai�200080, P.R.�China
5. Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Fudan University, Shanghai 200011, P.R. China