1. Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
2. Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China
3. Women’s Health and Perinatology Research Group, Department of Clinical Medicine, The Arctic University of Norway, Tromsø, Norway
4. Department of Maternal and Child Health, National Health and Family Planning Commission of the People’s Republic of China, Beijing, China
5. Institute of Biomedical Sciences, Fudan University, Shanghai, China