1. Center for General Medicine Education, School of Medicine; Keio University; Minato Japan
2. Division of Acute and Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine; Hokkaido University Graduate School of Medicine; Sapporo Japan
3. Division of Traumatology, Research Institute; National Defense Medical College; Tokorozawa Japan
4. Division of Emergency Medicine; Tohoku University Graduate School of Medicine; Sendai Japan
5. Department of Traumatology and Acute Critical Medicine; Osaka University Graduate School of Medicine; Osaka Japan
6. Department of Emergency Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
7. Emergency & Critical Care Center; Kawasaki Municipal Hospital; Kawasaki Japan
8. Department of Emergency, Critical Care and Disaster Medicine; Hyogo College of Medicine; Nishinomiya Japan
9. Department of Emergency & Critical Care Medicine, School of Medicine; Kurume University; Kurume Japan
10. Advanced Medical Emergency & Critical Care Center; Yamaguchi University Hospital; Yamaguchi Japan
11. Department of Emergency and Acute Intensive Care Medicine; Fujita Health University; Toyoake Japan
12. Department of Emergency and Critical Care Medicine; Nippon Medical School; Tokyo Japan
13. Department of Emergency & Critical Care Medicine; Trauma Center St. Mary's Hospital
14. Department of Acute Medicine; Kawasaki Medical School; Kurashiki Japan
15. Department of Emergency Medicine, Trauma and Resuscitation Center; Teikyo University School of Medicine; Tokyo Japan
16. Advanced Critical Care Center Aichi Medical University Hospital; Nagakute Japan
17. Department of Critical Care Medicine; Iwate Medical University; Morioka Japan
18. Department of Trauma & Critical Care Medicine, School of Medicine; Kyorin University; Tokyo Japan
19. Department of Emergency & Critical Care Medicine, School of Medicine; Keio University; Tokyo Japan