1. Section of Diabetes and Metabolic Disease, Department of Clinical and Experimental Medicine, University of Pisa and Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
2. Epidemiology Unit, Regional Health Agency (ARS) of Tuscany, Florence, Italy
3. Research Unit of Diabetes and Endocrine Diseases, Fondazione IRCCS “Casa Sollievo della Sofferenza,” San Giovanni Rotondo, Italy