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. 2016 Nov 3;2:16020. doi: 10.1038/npjparkd.2016.20

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Copyright © 2016 The Author(s)

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Mean PDQ-39 domain scores at baseline and final visit. N=30. Error bars indicate standard deviation. P values from a two-sided one-sample t-test indicate statistically significant mean change from baseline; ***P⩽0.001, ^aP=0.059, ^bP=0.070. PDQ, Parkinson’s Disease Questionnaire.