1. Comparison of cancer the oral cavity and pharynx worldwide: etiological clues;Franceschi;Oral Oncol,2000
2. Cancer statistics 2016;Siegel;CA Cancer J Clin,2016
3. Ministério da Saúde. Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA), Coordenação de Prevenção e Vigilância. Estimativa 2016 – Incidência de Câncer no Brasil [Internet]. Rio de Janeiro; 2015. 126p. Available from: http://www.inca.gov.br/estimativa/2016/estimativa-2016-v11.pdf [accessed 2017].
4. Oropharyngeal Cancer Survival: a population-based study of patients diagnosed between 1978 and 2002;De Souza;Oncol Atual,2012
5. Correlation between symptoms and course duration of upper aerodigestive tract cancer at early and advanced stages;Santos;Braz J Otorhinolaryngol,2013