D. D. da Silva, R. B. de Held, S. V. de S. Torres, M. da L. R. de Sousa, A. L. Neri, and J. L. F. Antunes, “ Self-perceived oral health and associated factors among the elderly in Campinas, Southeastern Brazil, 2008-2009 ”, Rev. saúde pública, vol. 45, no. 6, pp. 1145–1153, Dec. 2011, doi: 10.1590/S0034-89102011005000068.