Núñez-Troconis, J., Delgado, M., González, J., Mindiola, R., Velásquez, J., Conde, B., Whitby, D. y Munroe, D.J. 2009. Prevalence and Risk Factors of Human Papillomavirus Infection in Asymptomatic Women in a Venezuelan Urban Area. Investigación Clínica. 50, 2 (oct. 2009).