Affiliation: | 1. Uppsala University, Department for Surgical Sciences, Uppsala, Sweden;2. Uppsala University, Centre for Clinical Research- Västerås, Västerås, Sweden;3. Uppsala University, Department of Radiology, Uppsala, Sweden;4. Västerås County Hospital, Department of Radiology, Västerås, Sweden;5. Institute of Clinical Sciences- Sahlgrenska Academy- University of Gothenburg, Department of Radiology, Gothenburg, Sweden;6. Institute of Clinical Sciences- Sahlgrenska Academy- University of Gothenburg, Department of Surgery, Gothenburg, Sweden |