No abstract available
MeSH terms
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Adolescent
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Adult
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Alcoholism / complications
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Barbiturates / adverse effects
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Bradycardia / chemically induced*
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Bradycardia / mortality
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Cocaine / adverse effects
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Death, Sudden
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Electrocardiography*
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Female
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Heart / drug effects
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Heart Rate / drug effects
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Heroin / adverse effects
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Humans
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Male
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Methadone / adverse effects
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Methadone / urine
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Middle Aged
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Morphine / urine
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Quinine / urine
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Substance-Related Disorders / complications*
Substances
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Barbiturates
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Heroin
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Morphine
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Quinine
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Cocaine
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Methadone