A. L. F. Santos, S. F. M. Derchain, M. R. Martins, L. O. Z. Sarian, E. Z. Martinez, and K. J. Syrjänen, “Human papillomavirus viral load in predicting high-grade CIN in women with cervical smears showing only atypical squamous cells or low-grade squamous intraepithelial lesion”, Sao Paulo Med J, vol. 121, no. 6, pp. 238–243, Nov. 2003.