1. Department of Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
2. Department of Anaesthesia and Intensive Care Biomedical and Clinical Sciences Linköping University Linköping Sweden
3. Department of Anaesthesiology, Intensive Care and Pain Medicine University of Helsinki and Helsinki University Hospital Helsinki Finland
4. Division of Prehospital Services Air Ambulance Department Oslo University Hospital Oslo Norway
5. The Norwegian Air Ambulance Foundation Drøbak Norway
6. Faculty of Health Sciences University of Stavanger Stavanger Norway
7. Department of Anaesthesia Tampere University Hospital Tampere Finland
8. Faculty of Medicine and Health Technology Tampere University Tampere Finland
9. Division of Anesthesia and Intensive Care Medicine Landspitali‐The National University Hospital of Iceland Reykjavik Iceland
10. Faculty of Medicine University of Iceland Reykjavik Iceland