1. Division of Health Economics, Policy and Management; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong
2. Queen Elizabeth Hospital; Hong Kong
3. Department of Medicine & Rehabilitation; Tung Wah Eastern Hospital; Hong Kong
4. Tuen Mun Hospital; Hong Kong
5. Kwong Wah Hospital; Hong Kong
6. Faculty of Medicine; The Chinese University of Hong Kong; Hong Kong China