Centers for Disease Control and Prevention. (2006, June 29). Human papillomavirus vaccine. Retrieved January 16, 2007, from www.cdc.gov
2.
KoutskyL. A. (1997). Epidemiology of genital human papillomavirus infection. American Journal of Medicine, 102(5A), 3–8.
3.
ParkinD. M.BrayF.PisaniP. (2005). Global cancer statistics, 2002. CA: A Cancer Journal for Clinicians, 55(2), 74–108.
4.
WeinstockH.BermanS.CatesW.Jr. (2004). Sexually transmitted diseases among American youth: Incidence and prevalence estimates, 2000. Perspectives on Sexual and Reproductive Health, 36(1), 6–10.
