1. Department of Emergency Medicine, Taipei Tzu Chi Hospital, New Taipei, Taiwan
2. Division of Emergency Medical Service, New Taipei City Fire Department, New Taipei, Taiwan
3. Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien, Taiwan
4. Department of Emergency Medicine, National Taiwan University Hospital, Taipei City, Taiwan
5. Department of Emergency Medicine, National Taiwan University Hospital, Yun-Lin Branch, Douliu City, Taiwan