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Intravenous Substance Abuse
Risk-Taking
Sexual Behavior
Questionnaires
Male Homosexuality
Thailand
HIV Infections
Substance-Related Disorders
Hepatitis C
Risk Factors
Prevalence
Cohort Studies
Multivariate Analysis
HIV-1
Reassortant Viruses
Substance Abuse Treatment Centers
Methamphetamine
Narcotics
HIV Seropositivity
Disease Outbreaks
Co-Publications
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