1. Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, University Hospital of Würzburg, 97080 Würzburg, Germany
2. Institute of Anatomy and Cell Biology, University of Würzburg, 97070 Würzburg, Germany
3. Molecular Toxicology Unit, Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia
4. Department of Experimental Diabetology, German Institute of Human Nutrition, 14558 Potsdam-Rehbruecke, Germany
5. German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany