1. Department of Gastroenterology and Diabetology Heilig‐Geist Hospital Bensheim Germany
2. Institute for Epidemiology and Medical Biometry, ZIBMT Ulm University Ulm Germany
3. German Centre for Diabetes Research (DZD) Munich‐Neuherberg Germany
4. Klinik für Innere Medizin Herz‐Jesu‐Krankenhaus Münster Germany
5. Medizinische Klinik I Kreiskliniken Reutlingen Reutlingen Germany
6. Diabetologikum DDG MVZ Asbach‐Bäumenheim Asbach Germany
7. Diabetes Center University of Augsburg Augsburg Germany
8. University of Lübeck Institute for Endocrinology and Diabetes Lübeck Germany
9. Department of Internal Medicine 1, Endocrinology & Diabetes University of Lübeck Lübeck Germany
10. Diabetes Zentrum Lindlar Lindlar Germany
11. Rathauspraxis Manderscheid Manderscheid Germany
12. Diabetespraxis Wosch Hanau Germany