No abstract available
MeSH terms
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Adult
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Analgesics, Opioid / adverse effects*
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Codeine / adverse effects*
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Codeine / analogs & derivatives
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Drug Interactions
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Humans
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Male
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Middle Aged
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Piperazines / adverse effects*
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Priapism / chemically induced*
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Purines
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Sildenafil Citrate
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Sulfones
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Vasodilator Agents / adverse effects*
Substances
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Analgesics, Opioid
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Piperazines
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Purines
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Sulfones
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Vasodilator Agents
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Sildenafil Citrate
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dihydrocodeine
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Codeine