1. Department of Emergency Medicine, Chiayi Chang Gung Memorial Hospital, Chiayi County 613, Taiwan
2. Department of Emergency Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
3. Department of Otorhinolaryngology-Head and Neck Surgery, Chiayi Chang Gung Memorial Hospital, Chiayi County 613, Taiwan
4. Department of Medicine, Chang Gung University, No. 259, Wenhua 1st Rd., Guishan Dist., Taoyuan City 333, Taiwan
5. Department of Emergency Medicine, Cathay General Hospital, Taipei City 106, Taiwan
6. Division of General Surgery, Department of Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
7. Department of Pediatric, Chiayi Chang Gung Memorial Hospital, Chiayi County 613, Taiwan
8. Department of Emergency Medicine, Sijhih Cathay General Hospital, New Taipei City 221, Taiwan