1. Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
2. Emergency and Critical Care Center, Hokkaido University Hospital, Sapporo, Japan
3. Clinical Research and Medical Innovation Center, Hokkaido University Hospital, Sapporo, Japan
4. Division of Trauma and Surgical Critical Care, Osaka General Medical Center, Osaka, Japan
5. Intensive Care Unit, Department of Anesthesiology, Jikei University School of Medicine, Tokyo, Japan
6. Department of Anesthesiology and Critical Care Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan
7. Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Japan
8. Department of Intensive Care Medicine, Kameda Medical Center, Kamogawa, Japan
9. Department of Emergency Medicine, University of Occupational and Environmental Health, Kitakyusyu, Japan