1 Clinical Research Center Hannover and Center for Pharmacology and Toxicology, Hannover Medical School, Hannover, Germany. schindler.christoph@mh-hannover.de.
2 Medical Clinic and Policlinic III at the University Hospital Dresden, Dresden, Germany.
3 Centre for Metabolic Vascular Medicine, GWT-TUD, Dresden, Germany.
4 Medical Consulting, GWT-TUD, Dresden, Germany.
5 Diabetes Center Herne, Herne, Germany.
6 Herz- und Diabeteszentrum Nordrhein-Westfalen, Ruhr-Universität Bochum, Bad Oeynhausen, Germany.
7 Department of Medicine at the University Hospital Leipzig, Leipzig, Germany.
8 Diabetesinstitut Heidelberg and Department of Clinical Studies, St. Josefskrankenhaus Heidelberg, Heidelberg, Germany.