L. H. Oliveira, E. V. Rodrigues, J. A. Pantaleão, A. P. T. Lopes, and S. M. Cavalcanti, “Human papillomavirus and co-factors to cervical câncer Among women attended at University Hospital of Universidade Federal Fluminense”, DST, vol. 14, no. 4, pp. 23–27, Jun. 2002.