1. Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong
2. Clinical Genetic Service, Department of Health, Hong Kong SAR Government, Hong Kong
3. Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong
4. Department of Medicine, Queen Mary Hospital, Hong Kong
5. Department of Medicine and Geriatrics, United Christian Hospital, Hong Kong
6. Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
7. Department of Medicine and Geriatrics, Ruttonjee & Tang Shiu Kin Hospitals, Hong Kong
8. Department of Medicine, Queen Elizabeth Hospital, Hong Kong
9. Department of Paediatrics, Prince of Wales Hospital, Hong Kong