1. Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
2. Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
3. Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, Guangzhou, China
4. Guangdong Engineering and Technology Research Center of Maternal-Fetal Medicine, Guangzhou, China
5. Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, China
6. Department of Obstetrics and Gynecology, Guangzhou Huadu District Maternal and Child Health Hospital, Guangzhou, China
7. Department of Obstetrics and Gynecology, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou, China
8. Department of Obstetrics and Gynecology, Northwest Women’s and Children’s Hospital, Xian, China
9. Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
10. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
11. Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
12. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
13. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
14. Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
15. Institute of Reproductive and Child Health, National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China