1. Department of Anaesthesiology and Intensive Care; Stavanger University Hospital; Stavanger Norway
2. Stavanger Acute Medicine Foundation for Education and Research; Stavanger University Hospital; Stavanger Norway
3. Department of Clinical Medicine; University of Bergen; Bergen Norway
4. Department of Research and Development; Norwegian Air Ambulance Foundation; Drøbak Norway
5. Department of Health Care Sciences; University of Stavanger; Stavanger Norway
6. Department of Anaesthesiology and Intensive Care; Haukeland University Hospital; Bergen Norway