1. Departments of Endocrinology and Metabolism (R.E., E.M., L.A., V.B., C.C., F.L., L.G., P.V., A.P.), University of Pisa, 56100 Pisa, Italy
2. World Health Organization Collaborating Center for the Diagnosis and Treatment of Thyroid Cancer and Other Thyroid Diseases (R.E., E.M., L.A., V.B., C.C., F.L., L.G., P.V., A.P.), High Technology Center for the Study of the Environmental Damage of the Endocrine and Nervous Systems, University of Pisa, 56124 Pisa, Italy
3. Statistics and Applied Mathematics to Economy (L.M.), University of Pisa, 56100 Pisa, Italy
4. Surgery (F.B., P.M.), University of Pisa, 56100 Pisa, Italy
5. Oncology (Division of Pathology) (G.B., G.D.C.), University of Pisa, 56100 Pisa, Italy
6. Departments of Internal Medicine, Endocrinology and Metabolism, and Biochemistry (F.P.), University of Siena, 53100 Siena, Italy
7. AMBISEN Center (A.P.), High Technology Center for the Study of the Environmental Damage of the Endocrine and Nervous Systems, University of Pisa, 56124 Pisa, Italy