[1] Prehospital Emergency Medical Service,Research Department
[2] Central Denmark Region,Department of Anaesthesiology
[3] Regional Hospital of Horsens,Department of Anaesthesiology
[4] Aarhus University Hospital,Division for Health Services
[5] Norwegian Institute of Public Health,Faculty of Health Sciences
[6] University of Stavanger,Department of Research
[7] Norwegian Air Ambulance Foundation,Trauma Unit
[8] Sørlandet Hospital,Centre for Prehospital Emergency Care
[9] Oulu University Hospital,Anaesthesia Research Group, MRC
[10] Oulu University Hospital and University of Oulu,Centre for Prehospital Emergency Medicine
[11] Kuopio University Hospital and University of Eastern Finland,Department of Biomedical and Clinical Sciences (BKV)
[12] Linköping University,Division of Prehospital Services, Air Ambulance Department
[13] Department of Prehospital Care and Disaster Medicine,Department of Clinical Medicine
[14] Region of Skåne,undefined
[15] Landspitalinn University Hospital,undefined
[16] Oslo University Hospital,undefined
[17] Aarhus University,undefined
[18] Danish Air Ambulance,undefined