1. Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Centre Munich at the University of Tübingen (Paul Langerhans Institute Tübingen); Tübingen Germany
2. Section on Experimental Radiology, Department of Diagnostic and Interventional Radiology; University Hospital Tübingen; Tübingen Germany
3. Department of Endocrinology and Diabetology, Angiology, Nephrology and Clinical Chemistry; University Hospital Tübingen; Tübingen Germany
4. Department of Diagnostic and Interventional Radiology; University Hospital Tübingen; Tübingen Germany