1. Department of Surgical and Perioperative Sciences, Anesthesia and Intensive Care Medicine, Umeå University , Umeå, Sweden
2. Department of Community Medicine and Rehabilitation, Forensic Medicine, Umeå University , Umeå, Sweden
3. Faculty of Kinesiology and Recreation Management and Department of Anesthesia, University of Manitoba , Winnipeg, Canada
4. Emergency and Disaster Medicine Centre, Umeå University , Umeå, Sweden