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. 2020 Nov 20;6:35. doi: 10.1038/s41531-020-00136-9

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — The difference between the MDS-UPDRS III at the first and final visit against the severity of MDS-UPDRS III at the first visit (X-axis). Plots are box and whiskers (centre line: median, bounds of box:25th and 75th percentile and whisker: 10th and 90th percentile) and white boxes indicating the PKG+ arm and the grey boxes the PGK− arm. P values are from Mann–Whitney test.