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New York City
United States
Intravenous Substance Abuse
Risk-Taking
Sexual Behavior
Questionnaires
Needle Sharing
Unsafe Sex
Risk Factors
Urban Population
Socioeconomic Factors
Prevalence
Logistic Models
Cross-Sectional Studies
Substance-Related Disorders
HIV Infections
Human Influenza
Hepatitis C
Immunization Programs
Influenza Vaccines
Co-Publications
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