Carvalho, Newton Sérgio de, Anderson M Winkler, Lucas Formighieri, Olavo S Vianna, Patrick V Varaschin, Beatriz Freitas de Carvalho, and Juarez Gabardo. “A Survey on Adolescent Sexual Behavior in a Public Brazilian High School: Some Data to HPV Vaccination Introduction”. Brazilian Journal of Sexually Transmitted Diseases 25, no. 2 (May 16, 2013): 103–108. Accessed May 18, 2024. https://bjstd.org/revista/article/view/314.