Afonso, L. A., Oliveira, L. H., Cavalcanti, S. M. B., Dobao, E., & Alves, G. (2010). Update in the human papillomavirus infection prevalence rates and risk factors associated with penile cancer cases. Brazilian Journal of Sexually Transmitted Diseases, 22(3), 145–149. Retrieved from https://bjstd.org/revista/article/view/1102