1. Division of Emergencies and Critical Care, Department of Research and Development, Oslo University Hospital, Oslo, Norway
2. Faculty of Social Sciences, Department of Psychology, University of Oslo, Oslo, Norway
3. Division for Health Services, Department of Health Services Research, Norwegian Institute of Public Health, Oslo, Norway
4. Norwegian Centre for Violence and Traumatic Stress Studies, Oslo, Norway
5. Division of Clinical Neuroscience, Department of Research and Development, Oslo University Hospital, Oslo, Norway
6. Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
7. Division of Emergencies and Critical Care, Department of Pain Management and Research, Oslo University Hospital, Oslo, Norway