1. Department of Emergency Medicine, Center for Advanced Resuscitation Medicine, University of Illinois, Chicago, IL, USA
2. Department of Emergency Medicine, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
3. Department of Emergency, School of Medicine, College of Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
4. Emergency Department, Department of Emergency and Critical Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan