No abstract available
Publication types
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Letter
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Randomized Controlled Trial
MeSH terms
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Adult
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Brain Chemistry*
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Cross-Over Studies
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Double-Blind Method
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Female
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Humans
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Male
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Middle Aged
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Serotonin / physiology*
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Tryptophan / metabolism*
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gamma-Aminobutyric Acid / analysis*
Substances
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Serotonin
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gamma-Aminobutyric Acid
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Tryptophan