1. Institute for Health Services Research and Health Economics German Diabetes Center (DDZ) Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf Düsseldorf Germany
2. German Center for Diabetes Research (DZD) Partner Düsseldorf München‐Neuherberg Germany
3. Institute for Health Services Research and Health Economics Centre for Health and Society Medical Faculty and University Hospital Düsseldorf Heinrich Heine University Düsseldorf Düsseldorf Germany
4. mediStatistica Wuppertal Germany
5. winDiab gGmbH, wissenschaftliches Institut der niedergelassenen Diabetologen Neuss Germany