1. Department of Surgery and Department of Clinical and Experimental Medicine County Council of ÖstergötlandLinköping University Linköping Sweden
2. Department of Surgery Regional Hospital of Växjö Växjö Sweden
3. Centre for Organisational Support and Development County Council of Östergötland Linköping University Linköping Sweden
4. Division of Nursing Science Department of Health, Medicine and Caring Sciences Linköping University Linköping Sweden