1. Department of Obstetrics, Shanghai Putuo Maternity & Infant Health Hospital, Shanghai 200062, P. R. China
2. Laborartory for Reproductive Immunology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, P. R. China
3. The Academy of Integrative Medicine of Fudan University, Shanghai 200032, P. R. China
4. Shanghai Key Laboratory of Female Reproductive, Endocrine-Related Diseases, Shanghai 200011, P. R. China
5. Ningguo Bio-Leader Biotechnology Co., Ltd., Anhui 242300, P. R. China