1. Department of Nursing National Cheng Kung University Hospital Tainan Taiwan
2. Ditmanson Medical Foundation Chiayi Christian Hospital Chiayi City Taiwan
3. Institute of Gerontology College of Medicine National Cheng Kung University Tainan Taiwan
4. Division of Cardiology Department of Internal Medicine College of Medicine National Cheng Kung University Tainan Taiwan
5. Department of Internal Medicine Tainan Municipal Hospital Tainan Taiwan
6. Department of Nursing College of Medicine National Cheng Kung University Tainan Taiwan