1. Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari Aldo Moro, Bari, Italy
2. Department of Endocrinology, Diabetes and Metabolism, UCH-University Medical Center Ljubljana, Ljubljana, Slovenia
3. Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
4. International Diabetes Center at Park Nicollet, Minneapolis, MN, USA
5. Department of Endocrinology and Metabolic Diseases, Johannes Gutenberg University Medical Center, Mainz, Germany
6. Clinical Research Services, Mannheim, Germany
7. Division of Endocrinology and Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, USA
8. Clinical and Experimental Endocrinology, University Hospital Gasthuisberg, Katholieke Universiteit Leuven, Leuven, Belgium
9. Endocrine and Metabolic Consultants, Rockville, MD, USA
10. Forschergruppe Diabetes eV at the Helmholtz Centre, Munich-Neuherberg, Germany
11. Department of Diabetes & Endocrinology, University Hospitals of Derby and Burton NHS Foundation Trust, Derby, UK
12. Academic Unit for Translational Medical Sciences, University of Nottingham, Nottingham, England, UK