1. Department of Ophthalmology Medical Faculty Heinrich Heine University Düsseldorf Düsseldorf Germany
2. Institute for Clinical Diabetology German Diabetes Center Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf Düsseldorf Germany
3. Division of Endocrinology and Diabetology Medical Faculty Heinrich Heine University Düsseldorf Düsseldorf Germany
4. German Center of Diabetes Research (DZD e.V.) München‐Neuherberg Germany
5. Institute of Medical Statistics Düsseldorf University Hospital and Medical Faculty Heinrich Heine University Düsseldorf Düsseldorf Germany
6. Institute for Biometrics and Epidemiology German Diabetes Center Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf Düsseldorf Germany