1. Human papillomavirus–associated cancers - United States, 2004–2008;MMWR Morb Mortal Wkly Rep,2012
2. Prevalence of genital human papillomavirus among females in the United States, the National Health and Nutrition Examination Survey, 2003-2006;Hariri;J Infect Dis,2011
3. Unger ER, Sternberg M, et al: Prevalence of HPV infection among females in the United States. JAMA 2007; 297:813 U.S.
4. Cancer Statistics: 1999–2009 Incidence and Mortality Web-based Report. Atlanta (GA), Department of Health and Human Services, Centers for Disease Control and Prevention, and National Cancer Institute, 2013. Available at: http://www.cdc.gov/uscs; 2013. Accessed March 5, 2013
5. National Cancer Institute: Surveillance Epidemiology and End Results. Available: http://seer.cancer.gov/statfacts/html/cervix.html#incidence-mortality. Accessed April 11, 2013