No abstract available
Publication types
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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Analgesics, Opioid / therapeutic use*
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Drug Utilization / trends*
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Heroin Dependence / epidemiology*
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Humans
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Opioid-Related Disorders / epidemiology*
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Prescription Drugs / therapeutic use
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United States / epidemiology
Substances
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Analgesics, Opioid
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Prescription Drugs