1. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM: Estimates of worldwide burden of cancer in 2008: GLOBOCAN 2008. Int J Cancer. 2008, 2010 (127): 2893-2917.
2. National Cancer Institute/Ministry of Health: Estimate 2012. Incidence of cancer in Brazil. Rio de Janeiro. INCA. 2013, [http://www2.inca.gov.br/wps/wcm/connect/inca/portal/home]
3. American Joint Committee on Cancer, Cancer Staging Manual. Edited by: Edge SB, Byrd DR, Compton CC, Fritz AG, Greene FL, Trotti A. 2010, New York: Springer, 7
4. International union against cancer, TNM classification of malignant tumours. Edited by: Sobin LH, Gospodarowicz MK, Wittekind C. 2010, Oxford: Wiley-Blackwell, 7
5. Diagnosis and treatment of lung cancer: An evidence-based guide for the practicing clinician. Edited by: Detterbeck FC, Rivera MP, Socinski MA, Rosenman JG. 2001, Philadelphia: W.B. Saunders Company