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<journal-id journal-id-type="publisher-id">Front. Immunol.</journal-id>
<journal-title>Frontiers in Immunology</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Front. Immunol.</abbrev-journal-title>
<issn pub-type="epub">1664-3224</issn>
<publisher>
<publisher-name>Frontiers Media S.A.</publisher-name>
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<article-meta>
<article-id pub-id-type="doi">10.3389/fimmu.2023.1344990</article-id>
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<subj-group subj-group-type="heading">
<subject>Immunology</subject>
<subj-group>
<subject>Correction</subject>
</subj-group>
</subj-group>
</article-categories>
<title-group>
<article-title>Corrigendum: Efficacy of umbilical cord mesenchymal stromal cells for COVID-19: a systematic review and meta-analysis</article-title>
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<contrib-group>
<contrib contrib-type="author" equal-contrib="yes">
<name>
<surname>Yang</surname>
<given-names>Cong-wen</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="author-notes" rid="fn003">
<sup>&#x2020;</sup>
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<contrib contrib-type="author" equal-contrib="yes">
<name>
<surname>Chen</surname>
<given-names>Ru-dong</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="author-notes" rid="fn003">
<sup>&#x2020;</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1962093"/>
<role content-type="https://credit.niso.org/contributor-roles/writing-original-draft/"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Zhu</surname>
<given-names>Qing-run</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1871759"/>
<role content-type="https://credit.niso.org/contributor-roles/data-curation/"/>
<role content-type="https://credit.niso.org/contributor-roles/writing-original-draft/"/>
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<contrib contrib-type="author" equal-contrib="yes" corresp="yes">
<name>
<surname>Han</surname>
<given-names>Shi-jie</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="author-notes" rid="fn001">
<sup>*</sup>
</xref>
<xref ref-type="author-notes" rid="fn004">
<sup>&#x2021;</sup>
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<uri xlink:href="https://loop.frontiersin.org/people/1951367"/>
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<contrib contrib-type="author" equal-contrib="yes" corresp="yes">
<name>
<surname>Kuang</surname>
<given-names>Ming-jie</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="author-notes" rid="fn001">
<sup>*</sup>
</xref>
<xref ref-type="author-notes" rid="fn004">
<sup>&#x2021;</sup>
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<uri xlink:href="https://loop.frontiersin.org/people/1775692"/>
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<aff id="aff1">
<sup>1</sup>
<institution>Department of Neurosurgery, Weifang Medical University</institution>, <addr-line>Weifang</addr-line>, <country>China</country>
</aff>
<aff id="aff2">
<sup>2</sup>
<institution>Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong First Medical University</institution>, <addr-line>Jinan, Shandong</addr-line>, <country>China</country>
</aff>
<author-notes>
<fn fn-type="edited-by">
<p>Approved by: Frontiers Editorial Office, Frontiers Media SA, Switzerland</p>
</fn>
<fn fn-type="corresp" id="fn001">
<p>*Correspondence: Ming-jie Kuang, <email xlink:href="mailto:seagullkmj@126.com">seagullkmj@126.com</email>; Shi-jie Han, <email xlink:href="mailto:hanshijie@sdfmu.edu.cn">hanshijie@sdfmu.edu.cn</email>
</p>
</fn>
<fn fn-type="equal" id="fn003">
<p>&#x2020;These authors have contributed equally to this work and share the first authorship</p>
</fn>
<fn fn-type="equal" id="fn004">
<p>&#x2021;These authors have contributed equally to this work</p>
</fn>
</author-notes>
<pub-date pub-type="epub">
<day>04</day>
<month>01</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="collection">
<year>2023</year>
</pub-date>
<volume>14</volume>
<elocation-id>1344990</elocation-id>
<history>
<date date-type="received">
<day>27</day>
<month>11</month>
<year>2023</year>
</date>
<date date-type="accepted">
<day>28</day>
<month>11</month>
<year>2023</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright &#xa9; 2024 Yang, Chen, Zhu, Han and Kuang</copyright-statement>
<copyright-year>2024</copyright-year>
<copyright-holder>Yang, Chen, Zhu, Han and Kuang</copyright-holder>
<license xlink:href="http://creativecommons.org/licenses/by/4.0/">
<p>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.</p>
</license>
</permissions>
<related-article id="RA1" related-article-type="corrected-article" xlink:href="10.3389/fimmu.2022.923286" ext-link-type="doi">A Corrigendum on <article-title>Efficacy of umbilical cord mesenchymal stromal cells for COVID-19: a systematic review and meta-analysis</article-title> by Yang C-w, Chen R-d, Zhu Q-r, Han S-j and Kuang M-j (2022) <italic>Front. Immunol.</italic> 13:923286. doi:&#xa0;<object-id>10.3389/fimmu.2022.923286</object-id>
</related-article>
<kwd-group>
<kwd>COVID-19</kwd>
<kwd>umbilical cord mesenchymal stromal cells (UC-MSCs)</kwd>
<kwd>immunomodulation</kwd>
<kwd>adverse events and severe adverse events</kwd>
<kwd>the Mortality rate</kwd>
</kwd-group>
<contract-sponsor id="cn001">National Natural Science Foundation of China<named-content content-type="fundref-id">10.13039/501100001809</named-content>
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<custom-meta-wrap>
<custom-meta>
<meta-name>section-in-acceptance</meta-name>
<meta-value>Viral Immunology</meta-value>
</custom-meta>
</custom-meta-wrap>
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</front>
<body>
<sec id="s1">
<title>Incorrect affiliation</title>
<p>In the published article, there was an error in the second affiliation. Instead of &#x201c;Department of Spinal Surgery, Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China&#x201d;, it should be &#x201c;Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China&#x201d;.</p>
<p>The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.</p>
</sec>
</body>
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<sec id="s2" sec-type="disclaimer">
<title>Publisher&#x2019;s note</title>
<p>All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.</p>
</sec>
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