1. Department of Internal Medicine, Endocrinology, and Metabolism and Biochemistry, Section of Endocrinology and Metabolism (S.Can., M.C., S.M., S.Cap., G.B., L.B., A.M., F.P.), University of Siena, 53100 Siena, Italy
2. Department of Human Pathology and Oncology (P.T., A.D.S.), University of Siena, 53100 Siena, Italy
3. Unit of Otorinolaringoiatry (G.C.), Section of Surgery, University of Siena, 53100 Siena, Italy
4. Department of Surgery and Bioengineering (A.F.C.), Section of Surgery, University of Siena, 53100 Siena, Italy