1. Nuclear Medicine, Oslo University Hospital, Oslo, Norway
2. Nuclear Medicine/PET center, Dept. of Radiology, Haukeland University Hospital, Bergen, Norway
3. Nuclear Medicine, Dept. of Radiology, Stavanger University Hospital, Stavanger, Norway
4. Department of Urology, Haukeland University Hospital, Bergen, Norway
5. Department of Radiology, Haukeland University Hospital, Bergen, Norway
6. Section for Radiology, Dept. of Clinical Medicine, University of Bergen Faculty of Medicine and Dentistry, Bergen, Norway