1. School of Nursing Taipei Medical University Taipei Taiwan
2. Faculty of Nursing and Midwifery Hanoi Medical University Hanoi Vietnam
3. Department of Geriatrics and Gerontology Hanoi Medical University Hanoi Vietnam
4. Scientific Research Department National Geriatric Hospital Hanoi Vietnam
5. School of Nursing, College of Nursing National Yang Ming Chiao Tung University Taipei Taiwan
6. Community Research Center, Institude of Hospital and Health Care Management National Yang Ming Chiao Tung University Taipei Taiwan
7. Cheng Hsin General Hospital Taipei Taiwan