1. Institute of Biomedical Investigations August Pi i Sunyer, Barcelona, Spain.
2. Center of Biomedical Research in Diabetes and Associated Metabolic Diseases, Barcelona, Spain.
3. Oncological Endocrinology, University Hospital Molinette S. Giovanni Battista of Turin, Azienda University Hospital, San Giovanni Battista, Turin, Italy.
4. Unit of Diabetology and Metabolic Diseases Complex, Azienda Local Health Naples 1, Naples, Italy.
5. Deparment of Internal Medicine, University of Perugia, Perugia, Italy.
6. Department of Clinical and Experimental Medicine, Second University of Naples, Naples, Italy.
7. Liguria Regional Health Agency, Genoa, Italy.