1. Department of Medicine and Therapeutics, Institute of Digestive Disease, Chinese University of Hong Kong, Hong Kong
2. Imperial College School of Medicine, London, UK
3. Department of Medicine, University of Hong Kong, Queen Mary Hospital, Hong Kong
4. Department of Medicine and Geriatrics, Tuen Mun Hospital, Hong Kong
5. Department of Medicine and Geriatrics, United Christian Hospital, Hong Kong
6. Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong
7. Department of Medicine, Queen Elizabeth Hospital, Hong Kong
8. Department of Medicine, Pamela Youde Nethersole Eastern Hospital, Hong Kong
9. Department of Medicine, Tseung Kwan O Hospital, Hong Kong
10. Department of Medicine and Geriatrics, Caritas Medical Centre, Hong Kong
11. Department of Medicine, North District Hospital, Hong Kong
12. Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
13. Department of Medicine, Alice Ho Miu Ling Nethersole Hospital, Hong Kong
14. Department of Medicine, Yan Chai Hospital, Hong Kong