Strazza, Leila, et al. “Comparison of Sexual Behaviour, Drvg Use and Std-Aids Beiween Adolescents from a Private and Public Sciknn in São Paulo, Brazil”. Brazilian Journal of Sexually Transmitted Diseases, vol. 15, no. 3, Apr. 2003, pp. 21-23, https://bdst.emnuvens.com.br/revista/article/view/468.