No abstract available
MeSH terms
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Administration, Oral
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Analgesics, Opioid / therapeutic use*
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Humans
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Pain / drug therapy*
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Receptors, Opioid, mu / drug effects
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Tramadol / administration & dosage
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Tramadol / therapeutic use*
Substances
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Analgesics, Opioid
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Receptors, Opioid, mu
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Tramadol