1. Emergency Department, Tokushima Prefectural Miyoshi Hospital, 815-2, Miyoshi, Tokushima, 778-8503, Japan
2. Emergency and Critical Care Medicine, Tokushima University Hospital, 2-50-1, Kuramoto, Tokushima, 770-8503, Japan
3. Otolaryngology, Tokushima University Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima, 770-8503, Japan
4. Emergency and Disaster Medicine, Tokushima University Hospital, 2-50-1, Kuramoto, Tokushima, 770-8503, Japan
5. Emergency and Critical Care Medicine, Tokushima University Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima, 770-8503, Japan