No abstract available
MeSH terms
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Analgesics / administration & dosage
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Analgesics / chemistry
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Barbiturates / administration & dosage*
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Barbiturates / chemistry
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Chemistry, Pharmaceutical
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Drug Combinations
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Headache / drug therapy*
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Headache / epidemiology
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Humans
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Migraine Disorders / drug therapy*
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Migraine Disorders / epidemiology
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Randomized Controlled Trials as Topic
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Treatment Outcome
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United States / epidemiology
Substances
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Analgesics
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Barbiturates
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Drug Combinations
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butalbital