No abstract available
MeSH terms
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Australia / epidemiology
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British Columbia / epidemiology
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Heroin / supply & distribution*
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Heroin Dependence / epidemiology*
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Humans
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Law Enforcement
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Narcotics / supply & distribution*
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Needle-Exchange Programs / statistics & numerical data*
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Substance Abuse, Intravenous / epidemiology*
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Time Factors