No abstract available
MeSH terms
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Aged
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Analgesia, Epidural / adverse effects*
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Analgesics, Opioid / adverse effects*
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Drug Administration Routes
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Humans
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Injections, Spinal / adverse effects
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Male
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Morphine / adverse effects*
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Nystagmus, Pathologic / etiology*
Substances
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Analgesics, Opioid
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Morphine