No abstract available
MeSH terms
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Aged
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Clinical Trials as Topic
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Double-Blind Method
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Drug Interactions
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Female
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Humans
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Levodopa / antagonists & inhibitors
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Levodopa / pharmacology*
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Levodopa / therapeutic use
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Male
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Middle Aged
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Papaverine / pharmacology*
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Papaverine / therapeutic use
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Parkinson Disease / drug therapy*
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Random Allocation