1. Obstetrics and Gynecology Hospital of Fudan University; Shanghai China
2. Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases; Shanghai China
3. Department of Clinical Medicine; Women's Health and Perinatology Research Group; UiT - The Arctic University of Norway; Tromsø Norway
4. Institute of Biomedical Sciences; Fudan University; Shanghai China
5. Department of Maternal and Child Health; National Health and Family Planning Commission of the People's Republic of China; Beijing China
6. Department of Clinical Science; Intervention and Technology (CLINTEC); Karolinska Institute; Stockholm Sweden