Prevalence of human papillomavirus types in invasive cervical cancers from 7 US cancer registries before vaccine introduction.
Hopenhayn C, Christian A, Christian WJ, Watson M, Unger ER, Lynch CF, Peters ES, Wilkinson EJ, Huang Y, Copeland G, Cozen W, Saber MS, Goodman MT, Hernandez BY, Steinau M, Lyu C, Tucker TT, Saraiya M. Prevalence of human papillomavirus types in invasive cervical cancers from 7 US cancer registries before vaccine introduction. J Low Genit Tract Dis. 2014 Apr; 18(2):182-9.