1. Norwegian National Advisory Unit on Trauma; Division of Emergencies and Critical Care; Oslo University Hospital; Oslo Norway
2. Anaesthesia and Critical Care Research Group; Faculty of Health Sciences; University of Tromsø; Tromsø Norway
3. Department of Anaesthesiology and Intensive Care; Finnmark Health Trust; Hammerfest Hospital; Hammerfest Norway
4. Department of Research; Norwegian Air Ambulance Foundation; Drøbak Norway
5. Department of Global Public Health and Primary Care; University of Bergen; Bergen Norway
6. Norwegian Trauma Registry; Division of Orthopaedic Surgery; Oslo University Hospital; Oslo Norway
7. Department of Gastrointestinal Surgery; University Hospital North Norway Tromsø; Tromsø Norway