1. Department of Health, Medicine and Caring Sciences, Linköping University, SE 58183, Linkoping Sweden
2. Division of Surgery and Clinical Experimental Medicine, Department of Biomedical and Clinical Sciences, Linköping University, Linkoping, Sweden
3. Department of Surgery, Region Kalmar län, Kalmar, Sweden
4. Department for Medical Quality, Region Östergötland, Linkoping, Sweden
5. Futurum, Jönköping, Sweden Department of Health, Medicine and Caring Sciences, Linköping University, Linkoping, Sweden
6. Division of Clinical Chemistry and Pharmacology, Department of Biomedical and Clinical Sciences, Linköping University, Linkoping, Sweden