1. Fetal Medicine Center, Department of Obstetrics and Gynecology; First Affiliated Hospital of Sun Yat-sen University; Guangzhou Guangdong China
2. BGI-Shenzhen; Shenzhen China
3. Department of Fetal Medicine and Prenatal Diagnosis; the Third Affiliated Hospital of Guangzhou Medical University; Guangzhou Guangdong China
4. Obstetrics and Gynecology Institute of Guangzhou; Guangzhou Guangdong China
5. Key Laboratory for Major Obstetric Diseases of Guangdong Province; Guangzhou Guangdong China
6. Department of Gynecology and Obstetrics; Peking University Third Hospital; Beijing China
7. Maternal and Child Healthcare Hospital of Foshan; Foshan China
8. People's Hospital of Chenzhou; Hunan China
9. Key Laboratory of Reproductive Genetics; Zhejiang University; Hangzhou China
10. Maternal and Child Health Care Hospital of Xiamen; Fujian China
11. Clinical Laboratory of BGI Health, BGI-Shenzhen; Shenzhen China
12. School of Bioscience and Bioengineering; South China University of Technology; Guangzhou Guangdong China
13. Department of Biomedical Engineering; Southeast University; Nanjing China
14. Department of Biology; University of Copenhagen; Copenhagen Denmark
15. Shenzhen Key Laboratory of Transomics Biotechnologies; Shenzhen China
16. Shenzhen Engineering Key Laboratory of Birth Defects Screening; Shenzhen China
17. Guangdong Enterprise Key Laboratory of Human Diseases Genomics; Guangdong China
18. Fetal Medicine Centre, Paramount Clinic; Hong Kong