1. 1Endocrinology and Diabetes Unit, Department of Medicine I, University Hospital Wuerzburg, Wuerzburg, Germany
2. 2Endocrinology in Charlottenburg, Berlin, Germany
3. 3Department of Endocrinology, Diabetes and Nutrition, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
4. 4Medical practice for Endocrinology, Saarbrücken, Germany
5. 5Division of Endocrinology and Metabolism, Rostock University Medical Center, Rostock, Germany
6. 6Endocrinology & Diabetes Unit, Department of Internal Medicine 1, Goethe-University Hospital Frankfurt, Frankfurt/Main, Germany
7. 7Medical Practice for Endocrinology, Lübeck, Germany
8. 8Medizinische Klinik IV, Klinikum der Universität München, Munich, Germany
9. 9Medical Practice for Endocrinology & Diabetes, Oldenburg, Germany