1. Department of Geriatrics and Gerontology National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University Tainan Taiwan
2. Department of Public Health College of Medicine, National Cheng Kung University Tainan Taiwan
3. Department of Healthcare Information & Management, School of Health Technology Ming Chuan University Taoyuan Taiwan
4. Department of Medicine & Institute of Gerontology College of Medicine, National Cheng Kung University Tainan Taiwan
5. Department of Social and Behavioral Sciences Harvard T.H. Chan School of Public Health Boston USA