1 Department of Research and Development and Department of Postoperative and Intensive Care, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway. Electronic address: antonija.petosic@ous-hf.no.
2 Department of Anesthesia and Intensive Care Medicine, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
3 Department of Postoperative and Intensive Care, Division of Emergencies and Critical Care, Oslo University Hospital, and Department of Public Health Science, Faculty of Medicine, University of Oslo, Oslo, Norway.