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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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The prevalence of fatigue in patients with PD at each visit. The prevalence of fatigue in patients with PD ranged from 35.1 to 40.8% in the early stage within 3 years. The changed pattern of the prevalence of fatigue was similar to that of anxiety rather than that of sleep disorders, depression, and apathy. PD, Parkinson’s disease.