Núñez-Troconis, José, Mariela Delgado, Julia González, Raimy Mindiola, Jesvy Velásquez, Betty Conde, Denise Whitby, and David J Munroe. 2009. “Prevalence and Risk Factors of Human Papillomavirus Infection in Asymptomatic Women in a Venezuelan Urban Area”. Investigación Clínica 50 (2). https://www.produccioncientificaluz.org/index.php/investigacion/article/view/28746.