1. Department of Clinical Medicine (OPEN), University of Southern Denmark, J. B. Winsløws Vej 9a, 3rd floor, 5000 Odense, Denmark
2. Department of Emergency Medicine, Hospital of South West Jutland, Department of Regional Health Research, University of Southern Denmark, Finsensgade 35, 6700 Esbjerg, Denmark
3. Danish Patient Compensation Association, Kalvebod Brygge 45, 1560 Copenhagen, Denmark