Silva, Igor Iuco Castro, Lawrence A.C.R. Coutinho, José A. Silva Júnior, Andréa R.C. Pires, and Otílio M.P. Bastos. 2012. “Perception of Vulnerability to HPV and Headand Neck Cancer: Sexual and Risk Behaviors in Youths from Niteríi, RJ”. Brazilian Journal of Sexually Transmitted Diseases 24 (2). Niterói:85-92. https://bdst.emnuvens.com.br/revista/article/view/1045.