1. Department of Internal Medicine Radboud University Medical Center Nijmegen The Netherlands
2. Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health Wageningen University and Research Wageningen The Netherlands
3. Institute for Clinical Diabetology, German Diabetes Center Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf Düsseldorf Germany
4. German Center for Diabetes Research (DZD) Düsseldorf Germany