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. 2021 Jan 11;11:599459. doi: 10.3389/fneur.2020.599459

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Copyright © 2021 Li, Zheng, Yang, Sze-To, Leung and Chen.

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 flow chart indicates the selection of the subjects. HR-MRI, high-resolution magnetic resonance imaging; MCA, middle cerebral artery; TIA, transient ischemic attack.