1. From the Departments of Radiology (L.A.R.R., A.L., J.M., M.B.), Pathology (O.J.H., K.G., L.A.A.), and Urology (C.B., A.H.), Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine (L.A.R.R., C.B., A.L., M.B.) and Centre for Cancer Biomarkers CCBIO (O.J.H., L.A.A.), University of Bergen, Jonas Liesvei 65, N-5021 Bergen, Norway.