1. From the Departments of General Internal Medicine (T.D., J.D., A.R.R.M.H., J.W.M.L.), Radiology (L.J.S.), and Laboratory Medicine (F.C.G.J.S.), Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands; Departments of Diagnostic and Interventional Radiology (D.B., G.A.), Nephrology (O.V., L.C.R.), and Endocrinology, Diabetes, and Metabolism (H.S.W.), University Dusseldorf, Medical Faculty, Dusseldorf, Germany; Institute of Clinical Chemistry and Laboratory Medicine (M.P.) and Department...