1. Department of Medicine; University of Padova; Padova Italy
2. Department of Surgical, Medical, Molecular and Critical Area Pathology; University of Pisa; Pisa Italy
3. Department of Clinical and Experimental Medicine; University of Pisa; Pisa Italy
4. Metabolic Disease Unit, San Gennaro Hospital; Naples Italy
5. Diabetes Unit, Department of Internal Medicine; San Jacopo Hospital; Pistoia Italy