1. Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
2. Department of Surgery, Halland Hospital Varberg, Region Halland, 43237 Varberg, Sweden
3. Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
4. Department of Oncology, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
5. Department of Research and Development, University of Gothenburg, Region Halland, 40530 Gothenburg, Sweden
6. Department of Oncology-Pathology, Karolinska Institute, 17176 Stockholm, Sweden