1. Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital, Ullevål, Norway
2. Institute of Health and Society, University of Oslo, Norway
3. Department of Cardiothoracic Surgery, Oslo University Hospital, Ullevål, Norway
4. Lawrence S Bloomberg Faculty of Nursing, Senior Fellow, Massey College University of Toronto, Canada
5. Oslo and Akershus University College of Applied Sciences, Faculty of Health Sciences, Institute of Nursing, Norway