D. R. Pitta, L. O. Sarian, E. A. Campos, S. H. Rabelo-Santos, K. Syrjänen, and S. F. Derchain, “Phylogenetic classification of human papillomavirus genotypes in high-grade cervical intraepithelial neoplasia in women from a densely populated Brazilian urban region”, Sao Paulo Med J, vol. 127, no. 3, pp. 122–127, May 2009.