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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Ann Neurol. 2018 Dec 19;85(1):96–104. doi: 10.1002/ana.25376

Figure 2.

Figure 2.

Group comparison between controls, early-stage, and later-stage PD subgroups P values are from comparisons between controls, early-stage PD, and later-stage PD subgroups. Error bars are standard error of means.