Colón-López, Vivian, Ana Patricia Ortiz, Lizbeth Del Toro-Mejías, Michael Clatts, Greduvel Durán-Guzmán, Naydi Pérez, Maria DaCosta, and Joel Palefsky. 2015. “Prevalence and Correlates of Penile HPV Infection in a Clinic-Based Sample of Hispanic Males”. Puerto Rico Health Sciences Journal 34 (3). https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/1002.