1. Hamilton BE, Martin JA, Ventura SJ. Births: Preliminary data for 2006. National Vital Statistics Reports 2007; 56 [Online]. Available at: http://www.cdc.gov/nchs/data/nvsr/nvsr56/nvsr56_07.pdf. Accessed December 17, 2007.
2. U.S. Department of Health and Human Services. Centers for Disease Centers for Disease Control and Prevention. HIV/AIDS surveillance report, 2006 [Online]. Vol. 182008:1–55. Available at: http://www.cdc.gov/hiv/topics/surveillance/resources/reports/2006report/. Accessed July 18, 2008.
3. U.S. Department of Health and Human Services. Centers for Disease Control and Prevention. Sexually transmitted disease surveillance, 2006 [Online]. 2007. Available at: http://www.cdc.gov/std/stats/toc2006.htm. Accessed July 18, 2008.
4. Augustine J, Bridges E. Young people and HIV. Advocates for Youth; 2008. http://www.advocatesforyouth.org/publications/factsheet/fshivaid.htm. Accessed July 18, 2008.
5. Ventura SJ, et al Recent trends in teenage pregnancy in the United States, 1990–2002. Health e-stats. Hyattsville, MD: National Center for Health Statistics. Available at: http://www.cdc.gov/nchs/products/pubs/pubd/hestats/teenpreg1990-2002/teenpreg1990-2002.htm. Accessed December 17, 2007.