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Puerto Rico
Catchment Area (Health)
New York City
Intravenous Substance Abuse
Risk-Taking
Sexual Behavior
Needle Sharing
Bisexuality
Male Homosexuality
Residence Characteristics
HIV Infections
Substance-Related Disorders
Cocaine-Related Disorders
Heroin Dependence
Crack Cocaine
Needle-Exchange Programs
Administration, Intravaginal
Syringes
Sexual Partners
Hispanic Americans
Co-Publications
13
11
4
3
2
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