1. Third Medical Department (Endocrinology, Diabetology and Nephrology), University of Leipzig, Philipp-Rosenthal Str. 27, D-04103 Leipzig, Germany.
2. Department of Radiology, University of Leipzig, Liebigstr. 20, D-04103 Leipzig, Germany.
3. Department of Pathology, University of Leipzig, Liebigstr. 26, D-04103 Leipzig, Germany.
4. Department of Nuclear Medicine, University of Leipzig, Stephanstr. 11, D-04103 Leipzig, Germany.
5. Department of Ophthalmology, University of Leipzig, Liebigstr. 10/14, D-04103 Leipzig, Germany.