L. M. Sassi, C. Patussi, G. H. A. Ramos, R. B. Bixofis, J. L. Schussel, and M. I. Guebur, “Prevalence of oral lesions in elderly patients on oral cancer prevention campaigns in Parana state Brazil 1989-2013”., BDS, vol. 17, no. 3, pp. 26–30, Aug. 2014.