Table 1.

List of participating hospitals and ethics committee

Participating hospitals	Ethics committees
Principal institution
Department of Emergency and Critical Care Medicine, Tohoku University Hospital	Ethics Committee Tohoku University Graduate School of Medicine
Project management
Department of Emergency Medicine, Hokkaido University Hospital	The Institutional Review Board of Hokkaido University Hospital
Other participating institutions
Advanced Critical Care and Emergency Centre, Okayama University Hospital	Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences and Okayama University Hospital, Ethics Committee
Advanced Critical Care Centre, Gifu University Hospital	Medical Review Board of Gifu University Graduate School of Medicine
Advanced Emergency and Critical Care Centre, Saitama Red Cross Hospital	Hospital ethical committee of Saitama Red Cross
Advanced Trauma, Emergency and Critical Care Centre, Oita University Hospital	The Institutional Review Board of Interventional Clinical Research of Oita University Hospital
Department of Emergency Medicine, Gunma University Graduate School of Medicine	Institutional Review Board of Gunma University Hospital
Department of Acute Care Surgery, Shimane University Faculty of Medicine	The Shimane University Institutional Committee on Ethics
Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine	Chiba University Certified Clinical Research Review Board
Department of Emergency and Critical Care Medicine, Fukuoka University Hospital	Institutional Review Board of Fukuoka University Hospital
Department of Emergency and Critical Care Medicine, Japan Red Cross Maebashi Hospital	Research Review Board of Japan Red Cross Maebashi Hospital
Department of Emergency and Critical Care Medicine, Juntendo University Urayasu Hospital	The Ethics Committee of the Juntendo University Urayasu Hospital
Department of Emergency and Critical Care Medicine, Nippon Medical School	Ethics Committee of Nippon Medical School Hospital
Department of Emergency and Critical Care Medicine, Nippon Medical School Tama Nagayama Hospital	Ethics Committee of Nippon Medical School Tamanagayama Hospital
Department of Emergency and Critical Care Medicine, Tokyo Saiseikai Central Hospital	Research Ethics Committee, Tokyo Saiseikai Central Hospital
Department of Emergency and Critical Care Medicine, Wakayama Medical University	The Ethical Review Board of Wakayama Medical University
Department of Emergency Medicine, Division of Acute Care Surgery, Teikyo University School of Medicine	Teikyo University Institutional Review Board
Emergency and Critical Care Centre, Kochi Health Sciences Centre	Institutional Review Board, Kochi Health Sciences Center
Senri Critical Care Medical Centre, Saiseikai Senri Hospital	Ethical committee Saiseikai Senri Hospital
Senshu Trauma and Critical Care Centre, Rinku General Medical Centre	Ethics Committee for Clinical Research, Rinku General Medical Centre
Shock and Trauma Centre, Nippon Medical School Chiba Hokusoh Hospital	The Ethical Review Board of Nippon Medical School Chiba Hokusoh Hospital
Trauma and Acute Critical Care Centre, Tokyo Medical and Dental University Hospital of Medicine	Medical Research Institute Tokyo Medical and Dental University