No abstract available
MeSH terms
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Aged
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Analgesics, Opioid / administration & dosage
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Analgesics, Opioid / adverse effects*
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Analgesics, Opioid / therapeutic use*
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Drug Tolerance*
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Excitatory Amino Acid Antagonists / administration & dosage
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Excitatory Amino Acid Antagonists / therapeutic use*
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Female
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Humans
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Ketamine / administration & dosage
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Ketamine / therapeutic use*
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Neoplasms / complications*
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Pain / drug therapy*
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Pain / etiology*
Substances
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Analgesics, Opioid
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Excitatory Amino Acid Antagonists
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Ketamine