1. The University of Tokushima Graduate School, 3-18-15 Kuramoto-cho, Tokushima City, Tokushima 770-8503, Japan
2. Faculty of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima City, Tokushima 770-8503, Japan
3. Department of Emergency and Critical Care Medicine, The University of Tokushima Graduate School, 3-18-15 Kuramoto-cho, Tokushima City, Tokushima 770-8503, Japan
4. Department of Emergency and Disaster Medicine, Tokushima University Hospital, 2-50-1, Kuramoto-cho, Tokushima City, Tokushima 770-8503, Japan