L. S. de Castilho, E. F. e Ferreira, L. N. M. Velásquez, L. M. Fantinel, and E. Perini, “ Beliefs and attitudes about endemic dental fluorosis among adolescents in rural Brazil ”, Rev. saúde pública, vol. 44, no. 2, pp. 261–266, Apr. 2010, doi: 10.1590/S0034-89102010000200005.