1. A comparison of AIDS intervention approaches for injection drug users: Street outreach versus drug treatment intake — Are they hitting the same or different targets?;Bonito,1993
2. Assessing the quality of longitudinal surveys;Boruch;Evaluation Review,1988
3. U.S. AIDS cases reported through June 1991;Centers For Disease Control (CDC);HIV/AIDS Surveillance,1991
4. Methadone enhanced treatment (MET) trials: Treatment process study design;Dennis,1992
5. Changing the culture of risk;Friedman,1993