1. Department of Obstetrics and Gynecology Queen Mary Hospital, The University of Hong Kong Pok Fu Lam Hong Kong
2. CENTOGENE GmbH Rostock Germany
3. Prenatal Diagnostic Laboratory Tsan Yuk Hospital Sai Ying Pun Hong Kong
4. Department of Paediatrics and Adolescent Medicine The University of Hong Kong Pok Fu Lam Hong Kong
5. Department of Health, Clinical Genetic Service Kowloon Bay Hong Kong