1. Department of Intensive Care Rigshospitalet, Copenhagen University Hospital Copenhagen Denmark
2. Department of Anaesthesiology Division of Intensive Care Oulu University Hospital and Department of Anaesthesiology Tampere University Hospital Tampere Finland
3. Anaesthesiology and Intensive Care Medicine Umeå University Umeå Sweden
4. Department of Anaesthesiology and Intensive Care Medicine Landspitali University Hospital Reykjavik Iceland
5. Department of Intensive Care Haukeland University Hospital Bergen Norway
6. Department of Medicine Innlandet Hospital Trust‐Division Gjøvik Norway and Norwegian Knowledge Centre for the Health Services Oslo Norway