1. Centers for Disease Control and Prevention. Sexually Transmitted Disease Surveillance, 2001. Atlanta, GA: US Dept of Health and Human Services, Division of STD Prevention; 1996.
2. Patrick K, Covin, JR, Fulop M, Calfas K, Lovato C. Health risk behaviors among California college students. J Am Coll Health. 1997;45:265-273.
3. Reinisch J, Hill C, Sanders S, Ziemba-Davis M. High-risk sexual behavior at a Midwestern university: a confirmatory survey. Fam Plan Perspect. 1995;27:79-82.
4. Douglas K, Collins J, Warren C, et al. Results from the 1995 National College Health Risk Behavior Survey. J Am Coll Health. 1997;46:55-67.
5. Joffe A. Adolescents and condom use. Am J Dis Child. 1993;147:746-754.