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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">JFR</journal-id>
      <journal-id journal-id-type="nlm-ta">JMIR Form Res</journal-id>
      <journal-title>JMIR Formative Research</journal-title>
      <issn pub-type="epub">2561-326X</issn>
      <publisher>
        <publisher-name>JMIR Publications</publisher-name>
        <publisher-loc>Toronto, Canada</publisher-loc>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">v5i3e28357</article-id>
      <article-id pub-id-type="pmid">33667175</article-id>
      <article-id pub-id-type="doi">10.2196/28357</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Corrigenda and Addenda</subject>
        </subj-group>
        <subj-group subj-group-type="article-type">
          <subject>Corrigenda and Addenda</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Correction: Psychological Impacts of COVID-19 During the First Nationwide Lockdown in Vietnam: Web-Based, Cross-Sectional Survey Study</article-title>
      </title-group>
      <contrib-group>
        <contrib id="contrib1" contrib-type="author" equal-contrib="yes">
          <name name-style="western">
            <surname>Ngoc Cong Duong</surname>
            <given-names>Khanh</given-names>
          </name>
          <degrees>MSc</degrees>
          <xref rid="aff1" ref-type="aff">1</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0002-7152-9476</ext-link>
        </contrib>
        <contrib id="contrib2" contrib-type="author" equal-contrib="yes">
          <name name-style="western">
            <surname>Nguyen Le Bao</surname>
            <given-names>Tien</given-names>
          </name>
          <degrees>MD, PhD</degrees>
          <xref rid="aff2" ref-type="aff">2</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0002-0293-3248</ext-link>
        </contrib>
        <contrib id="contrib3" contrib-type="author" equal-contrib="yes">
          <name name-style="western">
            <surname>Thi Lan Nguyen</surname>
            <given-names>Phuong</given-names>
          </name>
          <degrees>BSc</degrees>
          <xref rid="aff3" ref-type="aff">3</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0003-2830-5677</ext-link>
        </contrib>
        <contrib id="contrib4" contrib-type="author">
          <name name-style="western">
            <surname>Vo Van</surname>
            <given-names>Thanh</given-names>
          </name>
          <degrees>MD</degrees>
          <xref rid="aff2" ref-type="aff">2</xref>
          <xref rid="aff4" ref-type="aff">4</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0002-5852-3336</ext-link>
        </contrib>
        <contrib id="contrib5" contrib-type="author">
          <name name-style="western">
            <surname>Phung Lam</surname>
            <given-names>Toi</given-names>
          </name>
          <degrees>MD</degrees>
          <xref rid="aff1" ref-type="aff">1</xref>
          <xref rid="aff5" ref-type="aff">5</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0002-8326-388X</ext-link>
        </contrib>
        <contrib id="contrib6" contrib-type="author">
          <name name-style="western">
            <surname>Pham Gia</surname>
            <given-names>Anh</given-names>
          </name>
          <degrees>MD</degrees>
          <xref rid="aff6" ref-type="aff">6</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0003-2580-0955</ext-link>
        </contrib>
        <contrib id="contrib7" contrib-type="author">
          <name name-style="western">
            <surname>Anuratpanich</surname>
            <given-names>Luerat</given-names>
          </name>
          <degrees>PhD</degrees>
          <xref rid="aff3" ref-type="aff">3</xref>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0002-6733-1707</ext-link>
        </contrib>
        <contrib id="contrib8" contrib-type="author" corresp="yes">
          <name name-style="western">
            <surname>Vo Van</surname>
            <given-names>Bay</given-names>
          </name>
          <degrees>PhD</degrees>
          <xref rid="aff7" ref-type="aff">7</xref>
          <address>
            <institution>Department of Pharmacy</institution>
            <institution>Thong Nhat Hospital</institution>
            <addr-line>1 Ly Thuong Kiet Street, Ward 7</addr-line>
            <addr-line>Tan Binh District</addr-line>
            <addr-line>Ho Chi Minh City, 70000</addr-line>
            <country>Vietnam</country>
            <phone>84 988889315</phone>
            <email>vovanbay2005@yahoo.com.vn</email>
          </address>
          <ext-link ext-link-type="orcid">https://orcid.org/0000-0002-4018-660X</ext-link>
        </contrib>
      </contrib-group>
      <aff id="aff1">
        <label>1</label>
        <institution>Mahidol University Health Technology Assessment (MUHTA) Graduate Program</institution>
        <institution>Mahidol University</institution>
        <addr-line>Bangkok</addr-line>
        <country>Thailand</country>
      </aff>
      <aff id="aff2">
        <label>2</label>
        <institution>Institute of Orthopaedics and Trauma Surgery</institution>
        <institution>Viet Duc Hospital</institution>
        <addr-line>Hanoi</addr-line>
        <country>Vietnam</country>
      </aff>
      <aff id="aff3">
        <label>3</label>
        <institution>Social Economics and Administrative Pharmacy Program, Department of Pharmacy</institution>
        <institution>Faculty of Pharmacy</institution>
        <institution>Mahidol University</institution>
        <addr-line>Bangkok</addr-line>
        <country>Thailand</country>
      </aff>
      <aff id="aff4">
        <label>4</label>
        <institution>Department of Surgery</institution>
        <institution>Hanoi Medical University</institution>
        <addr-line>Hanoi</addr-line>
        <country>Vietnam</country>
      </aff>
      <aff id="aff5">
        <label>5</label>
        <institution>Health Strategy and Policy Institute</institution>
        <institution>Ministry of Health</institution>
        <addr-line>Hanoi</addr-line>
        <country>Vietnam</country>
      </aff>
      <aff id="aff6">
        <label>6</label>
        <institution>Oncology Department</institution>
        <institution>Viet Duc Hospital</institution>
        <addr-line>Hanoi</addr-line>
        <country>Vietnam</country>
      </aff>
      <aff id="aff7">
        <label>7</label>
        <institution>Department of Pharmacy</institution>
        <institution>Thong Nhat Hospital</institution>
        <addr-line>Ho Chi Minh City</addr-line>
        <country>Vietnam</country>
      </aff>
      <author-notes>
        <corresp>Corresponding Author: Bay Vo Van <email>vovanbay2005@yahoo.com.vn</email></corresp>
      </author-notes>
      <pub-date pub-type="collection">
        <month>3</month>
        <year>2021</year>
      </pub-date>
      <pub-date pub-type="epub">
        <day>5</day>
        <month>3</month>
        <year>2021</year>
      </pub-date>
      <volume>5</volume>
      <issue>3</issue>
      <elocation-id>e28357</elocation-id>
      <history>
        <date date-type="received">
          <day>2</day>
          <month>3</month>
          <year>2021</year>
        </date>
        <date date-type="accepted">
          <day>3</day>
          <month>3</month>
          <year>2021</year>
        </date>
      </history>
      <copyright-statement>©Khanh Ngoc Cong Duong, Tien Nguyen Le Bao, Phuong Thi Lan Nguyen, Thanh Vo Van, Toi Phung Lam, Anh Pham Gia, Luerat Anuratpanich, Bay Vo Van. Originally published in JMIR Formative Research (http://formative.jmir.org), 05.03.2021.</copyright-statement>
      <copyright-year>2021</copyright-year>
      <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/">
        <p>This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Formative Research, is properly cited. The complete bibliographic information, a link to the original publication on http://formative.jmir.org, as well as this copyright and license information must be included.</p>
      </license>
      <self-uri xlink:href="https://formative.jmir.org/2021/3/e28357" xlink:type="simple"/>
      <related-article related-article-type="corrected-article" id="v4i12e24776" ext-link-type="doi" xlink:href="10.2196/24776" vol="4" page="e24776" xlink:type="simple">https://formative.jmir.org/2020/12/e24776/</related-article>
    </article-meta>
  </front>
  <body>
    <p>In “Psychological Impacts of COVID-19 During the First Nationwide Lockdown in Vietnam: Web-Based, Cross-Sectional Survey Study” (JMIR Form Res 2020;4(12):e24776) three errors were noted.</p>
    <p>In the originally published paper, the “greater than or equal to” symbol (≥) was missing in three places in tables due to an XML conversion error. The following corrections have been made:</p>
    <p>In Table 1, under “Age group (years) (reference: 18-39)," “60” has been corrected to “≥60”.</p>
    <p>In Table 1, under “Household size (reference: 1 member)," “6” has been corrected to “≥6”.</p>
    <p>In Table 2, under “Age group (years) (reference: 18-39)," “60” has been corrected to “≥60”.</p>
    <p>The correction will appear in the online version of the paper on the JMIR Publications website on March 5, 2021, together with the publication of this correction notice. Because this was made after submission to PubMed, PubMed Central, and other full-text repositories, the corrected article has also been resubmitted to those repositories.</p>
  </body>
</article>
