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      <title-group>
        <article-title>Additional reviewers</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>The Anh HAN</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Universidad de Nova de Lisboa</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Portugal.</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>R. Carolina Medina</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Universidad Autónoma Metropolitana - Iztapalapa</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>México. Enrique Rodríguez</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Universidad Autónoma Metropolitana - Iztapalapa</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>México. Gerardo A. Laguna</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Universidad Autónoma Metropolitana - Iztapalapa</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>México. Miguel López</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Universidad Autónoma Metropolitana - Iztapalapa</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>México. Ricardo Marcelín</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Universidad Autónoma Metropolitana - Iztapalapa</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>México.</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Mauricio Osorio G., Universidad de las Américas Puebla, Mexico. Claudia Zepeda C., Benemérita Universidad Autónoma de Puebla, Mexico. J. Luis Carballido C., Benemérita Universidad Autónoma de Puebla, Mexico. Ivan Olmos P., Benemérita Universidad Autónoma de Puebla</institution>
          ,
          <country country="MX">Mexico</country>
        </aff>
      </contrib-group>
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