Assaf, Andréa Videira, et al. “Dental Caries in Inland Brazilian Adolescents and Its Relationship With Social Determinants”. Brazilian Journal of Oral Sciences, vol. 13, no. 2, Dec. 2009, pp. 133-9, https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640911.