No abstract available
MeSH terms
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Acquired Immunodeficiency Syndrome / prevention & control*
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Acquired Immunodeficiency Syndrome / transmission
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Cocaine
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Dose-Response Relationship, Drug
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Heroin Dependence / psychology
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Heroin Dependence / rehabilitation*
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Humans
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Long-Term Care
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Methadone / administration & dosage*
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Substance Abuse, Intravenous / psychology
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Substance Abuse, Intravenous / rehabilitation*
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Substance-Related Disorders / psychology
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Substance-Related Disorders / rehabilitation