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Intravenous Substance Abuse
Risk-Taking
Sexual Behavior
Needle Sharing
New York City
Puerto Rico
New York
United States
HIV Infections
Substance-Related Disorders
Cocaine-Related Disorders
Crack Cocaine
Methadone
Hispanic Americans
Sexual Partners
HIV Seropositivity
HIV Seroprevalence
Risk Factors
Logistic Models
Interviews as Topic
Co-Publications
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