1. Department of Intensive Care 4131; Copenhagen University Hospital, Rigshospitalet; Copenhagen Denmark
2. 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; Department of Medicine and Health; Linköping University; Linköping Sweden
5. Department of Anaesthesiology and Intensive Care; University Hospital Northern Norway; Tromsø Norway
6. Division of Critical Care; Oslo University Hospital; Oslo Norway
7. Division of Intensive Care Medicine; Department of Perioperative, Intensive Care and Pain Medicine; Helsinki University Hospital; University of Helsinki; Helsinki Finland
8. Department of Anesthesia & Critical Care; Landspitali University Hospital of Iceland; Reykjavik Iceland