P. M. Oliveira, R. P. C. Oliveira, I. Érica M. Travessa, M. V. de C. Gomes, M. L. de J. dos Santos, and M. F. R. Grassi, “Prevalence and risk factors for cervical intraepithelial neoplasia in HIV-infected women in Salvador, Bahia, Brazil”, Sao Paulo Med J, vol. 128, no. 4, pp. 197–201, Jul. 2010.