1. Cardiac Medical Unit, Grantham Hospital, Hong Kong
2. Department of Cardiothoracic Surgery, Queen Mary Hospital, Hong Kong
3. Cardiology Centre, Department of Paediatrics and Adolescent Medicine, Hong Kong Children’s Hospital, Hong Kong
4. Department of Cardiology, Hong Kong Sanatorium and Hospital, Hong Kong
5. Department of Cardiothoracic Surgery, Hong Kong Sanatorium and Hospital, Hong Kong
6. Department of Surgery, Hong Kong University School of Clinical Medicine, Hong Kong