1. www.cdc.gov/std/ www.who.int/topics/sexually_transmitted_infections/ www.isstdr.org/ www.iusti.org/
2. (2001) European STD guidelines. Int J STD AIDS 12 Suppl 3:1–102
3. Aral SO, Holmes KK (2008) The epidemiology of STI and their social and behavioral determinants: industrialized and developing countries. In: Holmes KK, Sparling PF, Stamm WE et al (eds) Sexually transmitted diseases, 4th ed. McGraw-Hill, New York, pp 53–92
4. Brown TJ, Yen-Moore A, Tyring SK (1999) An overview of sexually transmitted diseases. Part I. J Am Acad Dermatol 41:511–529
5. Brown TJ, Yen-Moore A, Tyring SK (1999) An overview of sexually transmitted diseases. Part II. J Am Acad Dermatol 41:661–680