No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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Female
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Humans
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Injections, Epidural
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Injections, Intramuscular
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Male
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Meperidine / administration & dosage*
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Middle Aged
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Morphine / administration & dosage*
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Pain, Postoperative / drug therapy*
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Thoracic Surgery*