1. Center for Geriatrics and Gerontology; Taichung Veterans General Hospital; Taichung Taiwan
2. Division of Nephrology, Department of Internal Medicine; Taichung Veterans General Hospital; Taichung Taiwan
3. Institute of Clinical Medicine; School of Nursing, National Yang-Ming University; Taipei Taiwan
4. Department and Institute of Nursing; School of Nursing, National Yang-Ming University; Taipei Taiwan
5. Department of International Business; Tunghai University; Taichung Taiwan
6. Department of Physical Medicine and Rehabilitation; Taichung Veterans General Hospital; Taichung Taiwan
7. Department of Family Medicine; Taichung Veterans General Hospital; Taichung Taiwan
8. School of Medicine; Chung Shan Medical University; Taichung Taiwan
9. Department of Nursing; Taichung Veterans General Hospital; Taichung Taiwan