1 Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany.
2 German Center for Diabetes Research, München-Neuherberg, Germany.
3 Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany. [email protected].
4 German Center for Diabetes Research, München-Neuherberg, Germany. [email protected].
5 Division of Endocrinology and Diabetology, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany. [email protected].