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Intravenous Substance Abuse
Risk-Taking
Needle Sharing
Questionnaires
Sexual Behavior
Hepatitis C
HIV Infections
Substance-Related Disorders
Hepatitis B
Needle-Exchange Programs
Substance Abuse Treatment Centers
Washington
United States
New York City
Cross-Sectional Studies
Prevalence
Risk Factors
Socioeconomic Factors
HIV Seroprevalence
Methadone
Co-Publications
44
23
16
15
14
13
12
10
9
7
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