No abstract available
MeSH terms
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Attitude*
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Female
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Humans
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Male
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Piperazines / administration & dosage*
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Purines
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Sexual Partners*
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Sildenafil Citrate
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Sulfones
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Vasodilator Agents / administration & dosage*
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Women / psychology*
Substances
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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