Affiliation: | 1. Department of Medicine, Queen Mary Hospital, The University of Hong Kong, , Hong Kong;2. Acute Geriatric Unit, Grantham Hospital, , Hong Kong;3. Department of Community Medicine, School of Public Health, The University of Hong Kong, , Hong Kong;4. Department of Medicine and Geriatrics, Fung Yiu King Hospital, , Hong Kong;5. Department of Medicine and Geriatrics, Shatin Hospital;6. Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, , Hong Kong |