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