1. Division of Endocrinology, Diabetes, Angiology, Nephrology, and Clinical Chemistry, Department of Internal Medicine (K.M.), University Hospital of Tübingen, 72076 Tübingen, Germany
2. Department of Radiology and Nuclear Medicine (M.O.O., C.P.), University Hospital of Tübingen, 72076 Tübingen, Germany
3. Department of Radiology (M.O.O.), University Hospital Basel, CH-4031 Basel, Switzerland
4. Department of Pathology (P.A.), University Hospital of Tübingen, 72076 Tübingen, Germany
5. Institute of Pathology (J.Z.), University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
6. Department of General and Transplant Surgery (S.B.), University Hospital of Tübingen, 72076 Tübingen, Germany
7. Division of Endocrinology (S.P.), Medical Center, University of Duisburg-Essen, 45122 Essen, Germany