Fialho, Susana C.A.V., et al. “Prevalence of Cervical Intraepithelial Neoplasia and Hpv Induced Lesions in the Lower Genital Tractof HIV Seropositive Aids Women”. Brazilian Journal of Sexually Transmitted Diseases, vol. 14, no. 6, Oct. 2002, pp. 13-17, https://bjstd.org/revista/article/view/441.