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. 2021 Oct 20;13:701906. doi: 10.3389/fnagi.2021.701906

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Copyright © 2021 Ou, Hou, Liu, Lin, Jiang, Wei, Zhang, Cao, Zhao, Song and Shang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Evolution of fatigue in patients with PD over time. The presence of fatigue was not persistent over 3-year. The number of persistent fatigue from baseline to 1-, 2-, and 3-year were 37, 17, and 13, respectively. PD, Parkinson’s disease.