1. Avants, S., Warburton, L., Hawkins, K., & Margolin, A. (2000). Continuation of high-risk behavior by HIV-positive drug users: Treatment implications. Journal of Substance Abuse Treatment, 19, 15–22.
2. Centers for Disease Control and Prevention. (2009). HIV/AIDS surveillance report, 2007 (Vol. 19). Atlanta, GA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention. http://www.cdc.gov/hiv/topics/surveillance/resources/reports/ .
3. Cottler, L., Compton, W., Ben Abdallah, A., Cunningham-Williams, R., Abram, F., Fichtenbaum, C., et al. (1998). Peer-delivered interventions to reduce HIV risk behaviors among out-of-treatment drug abusers. Public Health Reports, 113, 31–41.
4. Des Jarlais, D., Friedman, S., Perlis, T., Chapman, T., Sotheran, J., Paone, D., et al. (1999). Risk behavior and HIV infection among drug injectors in the era of AIDS in New York City. Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology, 20, 67–72.
5. Des Jarlais, D., Marmor, M., Friedmann, P., Titus, S., Aviles, E., Deren, S., et al. (2000). HIV incidence among injection drug users in New York City, 1992–1997: Evidence for a declining epidemic. American Journal of Public Health, 90, 352–359.