Just What is Safer Sex?

http://safersex.org/safer.sex/

American Social Health Association

http://www.ashastd.org/

What's New in HPV Prevention?

http://www.cancer.org/docroot/cri/content/cri_2_4_6x_whats_new_in_cervical_cancer_research_and_treatment_8.asp?sitearea=cri

CDC Division of Sexually Trasmitted Diseases: Factsheets

http://www.cdc.gov/nchstp/dstd/disease_info.htm

History of the treatment of syphilis

http://poynter.indiana.edu/sas/lb/syphilis.html