1. Thyroid Unit (A.L.G., R.Y.C., G.M.-N.), Cellular and Molecular Endocrine Laboratory, LIM-25, University of São Paulo Medical School (FM-USP), 01246-903 São Paulo, Brazil;
2. Head and Neck Surgery of Santa Catarina Hospital (C.U.F.), 01310-000 São Paulo, Brazil;
3. Genetic Bases of Thyroid Tumors Laboratory (L.M., J.M.C.), Division of Genetics, Department of Morphology and Genetics, Federal University of São Paulo (UNIFESP), 04039-032 São Paulo, Brazil;
4. Department of Physiology and Biophysics (C.S.-N.), Institute of Biomedical Sciences, University of São Paulo, 05508-900 São Paulo, Brazil;
5. Center of Biotechnology (M.F.S.), Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, 05508–000 São Paulo, Brazil;
6. Department of Biological Sciences (I.G.S.R.), UNIFESP, 09972-270 São Paulo, Brazil