1. NCI (National Cancer Institute) on thyroid cancer http://www.cancer.gov/cancertopics/types/thyroid (accessed 4.8.10).
2. ACS (American Cancer Society), What are the key statistics for thyroid cancer? Vol. 7/13/2003; 2003.
3. US CSWG (U.S. Cancer Statistics Working Group), United States Cancer Statistics: 2000 Incidence, Department of Health and Human Services, Centers for Disease Control and Prevention and National Cancer Institute, Atlanta, GA, 2003.
4. Evaluation of the thyroid nodule;Lansford;Cancer Control,2006
5. Diagnostic pitfalls in thyroid fine-needle aspiration: a review of 394 cases;Caraway;Diagn. Cytopathol.,1993