1. Division of Surgery, Department of Clinical Sciences; Danderyd Hospital, Karolinska Institutet; Stockholm Sweden
2. Department of Diagnostic Radiology; Karolinska University Hospital Solna and Department of Molecular Medicine and Surgery Karolinska Institutet; Stockholm Sweden
3. Department of Medical Physics; Karolinska University Hospital Solna; Stockholm Sweden
4. Department of Gastroenterology and Hepatology; Karolinska University Hospital, Karolinska Institutet; Stockholm Sweden