1. Department of Endocrinology, Shanghai Gongli Hospital, The Second Military Medical University, Shanghai 200135, P.R. China
2. Department of Endocrinology, Punan Hospital of Pudong New District, Shanghai 200125, P.R. China
3. Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
4. State Key Laboratory of Molecular Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, P.R. China