1. Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2. Regional Cancer Centre, University Hospital, Umeå, Sweden
3. Division of Surgery, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
4. Department of Surgery and Perioperative Sciences, Umeå University, Umeå, Sweden
5. Department of Surgical Science, Uppsala University, Uppsala, Sweden
6. Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
7. Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
8. Department of Radiology, Oncology and Radiation Science, Uppsala University, Uppsala, Sweden
9. Department of Surgery, Institute of Clinical Sciences Malmö, Lund University, Lund, Sweden