1. Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
2. Department of Endocrinology, Diabetology and Clinical Chemistry (Internal Medicine 1), Heidelberg University Hospital, Heidelberg, Germany
3. German Center of Diabetes Research (DZD), München-Neuherberg, Germany
4. Division of Experimental Radiology, Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
5. Department of Neuroradiology, Würzburg University Hospital, Würzburg, Germany
6. Institute for Diabetes and Cancer, Helmholtz Diabetes Center, Helmholtz Center Munich, Munich, Germany