- 1.Centers for Disease Control and Prevention. Genital HPV infection fact sheet. Available at: http://www.cdc.gov/std/hpv/stdfact-hpv.htm. Accessed July 22, 2005.
- 2.National Institute of Allergy and Infectious Diseases. Human papillomavirus and genital warts. July 2004. Available at: http://www.niaid.nih.gov/factsheets/stdhpv.htm. Accessed July 22, 2005.
- 3.American Social Health Association. Human papillomavirus. Available at: http://www.ashastd.org/learn/learn_hpv_warts.cfm. Accessed October 17, 2005.
- 4.Centers for Disease Control and Prevention. Sexually transmitted diseases. STD surveillance 2003. Available at: http://www.cdc.gov/std/stats/tables/table47.htm. Accessed June 30, 2005.