1. Departments of Endocrinology and Metabolism (R.E., D.V., C.R., E.M., L.A., A.B., L.V., A.P., P.V.)
2. World Health Organization Collaborating Center for the Study and Treatment of Thyroid Diseases and Other Endocrine and Metabolic Disorders (R.E., D.V., C.R., E.M., L.A., A.B., A.P., P.V.), University of Pisa, 56124 Pisa, Italy
3. Surgery (L.T., R.G., C.U., C.L., G.M., P.M., F.B.), University of Pisa 56100 Pisa, Italy
4. Department of Electrical Systems and Automation (P.P.), University of Pisa, 56100 Pisa, Italy