Human papillomavirus prevalence in oropharyngeal cancer before vaccine introduction, United States.
Steinau M, Saraiya M, Goodman MT, Peters ES, Watson M, Cleveland JL, Lynch CF, Wilkinson EJ, Hernandez BY, Copeland G, Saber MS, Hopenhayn C, Huang Y, Cozen W, Lyu C, Unger ER. Human papillomavirus prevalence in oropharyngeal cancer before vaccine introduction, United States. Emerg Infect Dis. 2014 May; 20(5):822-8.