1. Department of Fetal Medicine and Prenatal Diagnosis; The Third Affiliated Hospital of Guangzhou Medical University; Guangzhou China
2. Obstetrics & Gynecology Institute of Guangzhou; Guangzhou China
3. The Medical Centre for Critical Pregnant Women in Guangzhou; Guangzhou China
4. Key Laboratory for Major Obstetric Diseases of Guangdong Province; Guangzhou China
5. BGI-Shenzhen; Shenzhen China
6. Tianjin Translational Genomics Center, BGI-Tianjin; Tianjin China
7. Binhai Genomics Institute, BGI-Tianjin; Tianjin China
8. BGI-Guangzhou; Guangzhou China
9. Key Laboratory for Reproduction and Genetics of Guangdong Higher Education Institutes; Guangzhou China