1. Department of Emergency Medicine, Chang Gung Memorial Hospital, Chiayi 613, Taiwan
2. Medical Education Department, Chang Gung Memorial Hospital, Chiayi 613, Taiwan
3. Department of Business Administration, College of Management, National Chung Cheng University, Minhsiung, Chiayi 621301, Taiwan
4. School of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
5. School of Nursing, College of Nursing, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
6. Center for Innovative Research on Aging Society (CIRAS), National Chung Cheng University, Chiayi 621301, Taiwan