1. Vander J.B., Gaston E.A., Dawber T.R. The significance of nontoxic nodules: final report of a 15-year study of the incidence of thyroid malignancy. Ann. Intern. Med. 1968, 69: 537–540.
2. Belfiore A., La Rosa G.L., Padova G., Sava L., Vigneri R. Prevalence of cold thyroid nodules and thyroid malignancies in patients from iodine-deficient area. Cancer 1987, 60: 3096–3111.
3. Esteves R.Z., Maciel R.M.B., Kasamatsu T.S., Kunii I.S., Furuzawa G.K., Vieira J.G.H. Study of urinary concentration of iodine in schoolchildren from Brazil. Encontro Brasileiro de Tireóide, Rio de Janeiro, RJ, Brazil, May 1997 (Abstract).
4. Furlanetto T.W., Peccin S., Fedrizzi D., Schneider M.A.O., Zimmer A.S., Reis P.S., Genro S.K., Ferreira E.V., Bittelbrum F., Müller A.S., Silva R.W., Siqueira I.R., Silveira M.F. Preval encia de nódulos de tireóide detectados por ecografia em mulheres após os 40 anos. Revista da Associação Médica Brasileira, in press.
5. Gharib H. Changing concepts in the diagnosis and management of thyroid nodules. Endocrinol. Metabol. Clin. North Am. 1997, 26: 777–801.