Laurindo Moacir Sassi et al. 2015. Prevalence of oral lesions in 25 years of Oral Cancer Prevention campaigns in Paraná State, Brazil, 1988 to 2013. Revista Sul-Brasileira de Odontologia. 11, 2 (jun. 2015), 134–7. DOI:https://doi.org/10.21726/rsbo.v11i2.829.