1. Department of Surgery, Central Hospital, Växjö, Sweden
2. Department of Research and Development, Region Kronoberg, Sweden
3. Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden
4. Department of Clinical Sciences, Lund University, Lund, Sweden
5. Department of Surgery, Lund University, Lund, Sweden
6. Skåne University Hospital, Lund, Sweden