E. F. C. Murta, M. A. H. de Souza, E. Araújo Júnior, and S. J. A. Adad, “Incidence of Gardnerella vaginalis, Candida sp and human papilloma virus in cytological smears”, Sao Paulo Med J, vol. 118, no. 4, pp. 105–108, Jul. 2000.