1. Graduate Institute of Long-Term Care, MacKay Medical College, New Taipei City, Taiwan
2. Department of Medical Research and Development, Show Chwan Memorial Hospital at Chang Bing, Changhua, Taiwan
3. Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
4. Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan
5. Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan