1. Division of Surgery, Department of Clinical Science, Intervention and Technology, (CLINTEC), Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
2. Department of Surgical And Perioperative Sciences, Umeå University, Umeå, Sweden
3. Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
4. Department of Surgery, Clinical and Experimental Medicine, University Hospital, Linköping, Sweden
5. Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital/Transplant Centre, Gothenburg, Sweden
6. Department of Surgery, Skane University Hospital, Lund University, Lund, Sweden