1. Department of Surgery, Halland Hospital Varberg, Region Halland, Varberg, Sweden
2. Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3. Department of Oncology, Halland Hospital Halmstad, Region Halland, Halmstad, Sweden
4. Department of Oncology, Sahlgrenska University Hospital, Gothenburg, Sweden