1. Department of Emergency and Critical Care Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
2. Division of Trauma and Surgical Critical Care, Osaka General Medical Center, Osaka, Japan
3. Department of Emergency and Critical Care Medicine, Keio University, Tokyo, Japan
4. Division of Acute and Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
5. Department of Emergency and Disaster Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
6. National Disaster Medical Center, Tokyo, Japan
7. Department of Surgery, Kitakyushu City Yahata Hospital, Kitakyushu, Japan
8. Department of Intensive Care Unit, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan
9. Division of Critical Care and Emergency Medicine, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
10. Department of Emergency and Critical Care Medicine, Fukuoka University, Fukuoka, Japan
11. Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Suita, Japan
12. Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
13. Graduate School of Emergency Medical System, Kokushikan University, Tama, Japan