No abstract available
MeSH terms
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Caffeine / therapeutic use
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Humans
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Parkinson Disease / drug therapy*
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Parkinson Disease / physiopathology*
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Phosphodiesterase Inhibitors / therapeutic use*
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Respiration*
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Theophylline / therapeutic use*
Substances
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Phosphodiesterase Inhibitors
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Caffeine
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Theophylline