1. Department of Obstetrics and GynaecologyThe Chinese University of Hong Kong Hong Kong China
2. NIPT Department, NGS Lab, Xcelom Limited Hong Kong China
3. Department of Obstetrics and GynaecologyPrince of Wales Hospital Shatin Hong Kong, China
4. Obstetrics & Gynaecology CentreHong Kong Sanatorium & Hospital Hong Kong China
5. Fetal Medicine CentreParamount Medical Centre Hong Kong China
6. EA 73‐28, Faculté de Médecine de l’Université René Descartes Paris France
7. Shenzhen Research InstituteThe Chinese University of Hong Kong Shenzhen China
8. The Chinese University of Hong Kong‐Baylor College of Medicine Joint Center for Medical Genetics The Chinese University of Hong Kong, Hong Kong China