No abstract available
MeSH terms
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Adult
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Aged
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Aged, 80 and over
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Female
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Humans
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Injections
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Male
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Middle Aged
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Morphine / administration & dosage*
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Morphine / therapeutic use
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Neoplasms / physiopathology*
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Pain, Intractable / drug therapy*
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Pain, Intractable / etiology
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Subarachnoid Space