1. Departments of Nuclear Medicine (P.D., C.D., K.N., F.A.V., I.G., H.J., C.R., M.L.) University Hospital, University of Würzburg, 97080 Würzburg, Germany
2. Internal Medicine I (M.F.) University Hospital, University of Würzburg, 97080 Würzburg, Germany
3. Endocrine and Diabetes Unit and Comprehensive Cancer Center (U.M.), University Hospital, University of Würzburg, 97080 Würzburg, Germany