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. 2021 Dec 17;12:769511. doi: 10.3389/fneur.2021.769511

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Copyright © 2021 Nelson, Zhang, Guo, Nacul and Song.

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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Publication trend in brain MRI research on myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) from 1993 to 2021. A MEDLINE and PubMed search using the keywords described yielded a total of 53 MRI original research papers. Studies investigated the brainstem are shown in filled colors, while those excluded the brainstem are in striped colors: orange: structural MRI only; blue: functional MRI involved.