1. West-German Centre of Diabetes and Health, Düsseldorf Catholic Hospital Group, Düsseldorf, Germany
2. German Institute for Telemedicine and Healthpromotion, Düsseldorf, Germany
3. Boehringer Ingelheim GmbH, Ingelheim am Rhein, Germany
4. Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim am Rhein, Germany
5. Mannheim Institute for Public Health, Medical Faculty Mannheim, Ruprecht-Karls University Heidelberg, Mannheim, Germany
6. Faculty of Medicine, Heinrich Heine University Düsseldorf, Düsseldorf, Germany