1. Department of Anaesthesia and Intensive Care, Biomedical and Clinical Sciences Linköping University Linköping Sweden
2. Department of Anaesthesiology, Intensive Care and Pain Medicine University of Helsinki and Helsinki University Hospital Helsinki Finland
3. Department of Anaesthesia Tampere University Hospital Tampere Finland
4. Institute of Clinical Medicine, University of Oslo Oslo Norway
5. Division of Anesthesia and Intensive Care Medicine Landspitali‐The National University Hospital of Iceland Reykjavik Iceland
6. Faculty of Medicine University of Iceland Reykjavik Iceland
7. Department of Intensive Care Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
8. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark