1. Laboratory of Clinical Pedagogy, Department of Internal Medicine, University of Turin, Turin, Italy;
2. Unit for Endocrinology and Diabetes, Maria Vittoria Hospital, Turin, Italy;
3. Unit for Diabetes and Metabolic Diseases ASL 19, Asti, Italy;
4. Unit for Diabetes and Metabolic Diseases, Scandiano Hospital, Scandiano, Italy;
5. Unit for Diabetes and Metabolic Diseases ASL 12, Biella, Italy;
6. Unit for Diabetes and Metabolic Diseases, Udine Hospital, Udine, Italy;
7. Department of Political Sciences, University of Turin, Turin, Italy;
8. Department of Public Health and Microbiology, University of Turin, Turin, Italy.