1. Division of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical SciencesUniversity of Campania “Luigi Vanvitelli” Naples Italy
2. Diabetes Unit, Department of Advanced Medical and Surgical SciencesUniversity of Campania “Luigi Vanvitelli” Naples Italy
3. Medical Statistics UnitUniversity of Campania “Luigi Vanvitelli” Naples Italy