1. Departments of Nuclear Medicine (P.M.S.-J., C.B., M.L., D.G., T.P., T.T., I.V.), University of Vienna,A-1090 Vienna
2. The Department of Radiochemistry, Research Center (P.A.), A-2444 Seibersdorf, Austria
3. Gastroenterology (M.P.-R.), University of Vienna,A-1090 Vienna
4. Surgery (G.H.), University of Vienna,A-1090 Vienna
5. Pathology (K.K.), University of Vienna,A-1090 Vienna
6. Urology (A.K.), University of Vienna,A-1090 Vienna
7. Dermatology (H.S.-W.), University of Vienna,A-1090 Vienna