1. Nantou Hospital, Department of Emergency Medicine, Nantou City; China Medical University, Department of Public Health, Taichung, Taiwan
2. Chung Shan Medical University and Hospital, Department of Health Policy and Management, Taichung, Taiwan
3. China Medical University, School of Medicine; China Medical University Hospital, Department of Family Medicine, Taichung, Taiwan
4. Nantou Hospital, Department of Nursing, Nantou City, Taiwan
5. Nantou Hospital, Department of Surgery, Nantou City, Taiwan