1. German Diabetes Center Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf Institute for Biometrics and Epidemiology Düsseldorf Germany
2. German Center for Diabetes Research (DZD) Munich‐Neuherberg Germany
3. Heinrich Heine University Centre for Health and Society Institute for Health Services Research and Health Economics Faculty of Medicine Düsseldorf Germany
4. German Diabetes Center (DDZ) Leibniz Center for Diabetes Research at Heinrich Heine University Institute for Health Services Research and Health Economics Düsseldorf Germany
5. University of Ulm Institute of Epidemiology and Medical Biometry Ulm Germany