1. Department of Emergency and Critical Care Medicine; Tokyo Medical University; Shinjuku-ku Tokyo Japan
2. Department of Anatomy; Tokyo Medical University; Shinjuku-ku Tokyo Japan
3. Department of Primary Care and Emergency Medicine; Graduate School of Medicine and University School of Medicine; Kyoto University; Kyoto Kyoto Japan
4. Emergency Department; Ikoma City Hospital; Ikoma Nara Japan
5. Shock and Trauma Center; Chiba Hokusoh Hospital; Nippon Medical School; Inba Chiba Japan
6. Department of Emergency and Critical Care Medicine; Nihon University School of Medicine Itabashi Hospital; Itabashi-ku Tokyo Japan
7. Department of Traumatology and Reconstruction Surgery; Fukushima Medical University; Fukushima Fukushima Japan
8. Advanced Disaster Medical and Emergency Critical Care Center; Niigata University Medical and Dental Hospital; Niigata Niigata Japan
9. Department of Gastroenterological Surgery II; Hokkaido University Graduate School of Medicine; Sapporo Hokkaido Japan