1. Interdisciplinary Department of Medicine, Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases, School of Medicine, University of Bari “Aldo Moro”, Piazza Giulio Cesare, Bari, Italy
2. Diabetology Unit, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
3. Unit of Endocrinology, Policlinico Morgagni CCD, Catania, Italy
4. Department of Endocrinology and Metabolism, Regina Apostolorum Hospital, Rome, Italy