Centers for Disease Control and Prevention. ( 2002). HIV/AIDS surveillance report: Mid year edition 13(1). Retrieved June 12, 2002, from http://www.cdc.gov/hiv/stats/hasrlink.HTM
2.
Centers for Disease Control and Prevention ( 2004). What is HIV and how can I get it? Retrieved September 10, 2004, from http://www.cdc.gov/hiv/pubs/brochure/atrisk.htm
3.
U.S. Department of Health and Human Services. ( 2004). AIDSinfo. Retrieved August 30, 2004, from http://aidsinfo.nih.gov