Article permissions: copyright details, license URL, license text.
<permissions>
<copyright-statement>© 2014 Surname et al.</copyright-statement>
<copyright-year>2014</copyright-year>
<copyright-holder>Surname et al.</copyright-holder>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
<license-p>This is an open access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License</ext-link>, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.</license-p>
</license>
</permissions>
<permissions>
<copyright-statement>Copyright © 2012, Alegado et al</copyright-statement>
<copyright-year>2012</copyright-year>
<copyright-holder>Alegado et al</copyright-holder>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
<license-p>This article is distributed under the terms of the <ext-link ext-link-type= "uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License</ext-link>, which permits unrestricted use and redistribution provided that the original author and source are credited.</license-p>
</license>
</permissions>