Article metadata
Element or context:
<email>
Requirement:
- Place the author's email address within <email>; do not use <ext-link>
Example:
<contrib contrib-type="author" corresp="yes">
<string-name name-style="western">
<given-names initials="ML">Martin L.</given-names>
<surname initials="K">King</surname><suffix>Jr.</suffix></string-name> <email>mlk@gmail.com</email>
<xref ref-type="aff" rid="affc"><sup>c</sup></xref>
</contrib>