1. Department of Emergency Medicine, China Medical University Hospital, Taichung, Taiwan
2. School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
3. Department of Public Health, China Medical University, Taichung, Taiwan
4. Department of Emergency Medicine, Chang Gung Memorial Hospital, Linkou, Taiwan
5. College of Medicine, Chang Gung University, Taoyuan, Taiwan
6. Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan
7. Ministry of Health and Welfare, National Health Insurance Administration, Taipei, Taiwan