No abstract available
MeSH terms
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HIV Infections / epidemiology*
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HIV Infections / prevention & control
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HIV Infections / transmission
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HIV Seroprevalence / trends*
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Humans
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Methadone / therapeutic use*
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Opioid-Related Disorders / epidemiology
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Opioid-Related Disorders / rehabilitation*
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Spain / epidemiology
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Substance Abuse, Intravenous / epidemiology
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Substance Abuse, Intravenous / rehabilitation*