1. Faculty of Medicine, University of Bergen, Bergen, Norway
2. Department of Anaesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway
3. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
4. Department of Research, Norwegian Air Ambulance Foundation, Drøbak, Norway
5. Faculty of Medicine, Department of Clinical Medicine, University of Bergen, Bergen, Norway
6. Health Services Research Group, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
7. National Centre for Emergency Primary Health Care, NORCE Health, Bergen, Norway