No abstract available
MeSH terms
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Age of Onset
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Brain-Derived Neurotrophic Factor / genetics*
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Gene Expression
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Gene Frequency
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Genotype
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Humans
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Middle Aged
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Parkinson Disease / epidemiology
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Parkinson Disease / genetics*
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Polymerase Chain Reaction
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Polymorphism, Genetic / genetics*
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Sweden / epidemiology
Substances
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Brain-Derived Neurotrophic Factor