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HIV Infections
Cocaine-Related Disorders
Coronary Artery Disease
Heroin Dependence
HIV-1
African Americans
Risk Factors
Prospective Studies
Prevalence
Magnetic Resonance Imaging
Longitudinal Studies
Time Factors
Cross-Sectional Studies
Cohort Studies
Intravenous Substance Abuse
Florida
China
HIV Seropositivity
CD4 Lymphocyte Count
Crack Cocaine
Co-Publications
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