1. Department of Internal Medicine, Danbury Hospital, Danbury, Connecticut, USA.
2. Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan.
3. Department of Emergency Medicine, Baylor Scott and White All Saints Medical Center, Fort Worth, Texas, USA.
4. Department of Emergency Medicine, John Peter Smith Hospital, Fort Worth, Texas, USA.
5. Department of Emergency Medicine, National Taiwan University, Taipei, Taiwan.
6. Department of Surgery, National Taiwan University Hospital, Taipei City, Taiwan.