ORTIZ, Ana P. et al. Oral Human Papillomavirus Infection among Drug Users in Puerto Rico. Puerto Rico Health Sciences Journal, [S. l.], v. 33, n. 4, 2014. Disponível em: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/1021. Acesso em: 3 nov. 2025.