1. Department of Medicine and Therapeutics; The Chinese University of Hong Kong; New Territories Hong Kong
2. Jockey Club Center for Osteoporosis Care and Control; The Chinese University of Hong Kong; New Territories Hong Kong
3. The S. H. Ho Center for Gerontology and Geriatrics; The Chinese University of Hong Kong; New Territories Hong Kong
4. Department of Medicine and Geriatrics; Shatin Hospital; New Territories Hong Kong
5. Department of Medicine and Geriatrics; Pok Oi Hospital; New Territories Hong Kong