No abstract available
MeSH terms
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Adult
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Chromatography, Gas
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Drug Combinations
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Female
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Heroin Dependence / drug therapy
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Humans
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Male
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Methadone / administration & dosage
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Methadone / blood
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Methadone / metabolism*
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Methadone / therapeutic use
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Middle Aged
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Naloxone / therapeutic use
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Surveys and Questionnaires
Substances
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Drug Combinations
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Naloxone
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Methadone