1Center for Teaching and Research in Disaster Medicine and Traumatology University Hospital 581 85 Linköping Sweden
2Department of Clinical and Experimental Medicine, Linköping University, 581 83 Linköping, Sweden
3Department of Surgery University Hospital 581 85 Linköping Sweden
4Department of Surgery Vrinnevi Hospital 603 79 Norrköping Sweden
5International Committee of the Red Cross, 19 Avenue de la Paix, 1202, Geneva, Switzerland
6Department of Public Health Sciences, Karolinska Institutet, 171 65, Solna, Sweden