1. German Center for Diabetes Research (DZD), Neuherberg
2. Department of Internal Medicine IV, Division of Diabetology,
Endocrinology and Nephrology, Eberhard-Karls University Tübingen,
Tübingen
3. Institute for Diabetes Research and Metabolic Diseases of the Helmholtz
Center Munich at the University of Tübingen,
Tübingen
4. Institute for Clinical Chemistry and Pathobiochemistry, Department for
Diagnostic Laboratory Medicine, University Hospital of Tübingen,
Tübingen, Germany
5. Marienhospital, Internal Medicine I, Diabetology,
Stuttgart