Agency or organization that funded the research on which a work was based.
A few example organizations are the Wellcome Trust, NIH, HHS, Princeton University, or sometimes a corporation such as Alcoa sponsoring the research on which a document was based.
<!ELEMENT funding-source
(#PCDATA %funding-source-elements;)* >(#PCDATA | email | ext-link | uri | inline-supplementary-material | related-article | related-object | hr | bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | mml:math | abbrev | index-term | index-term-range-end | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | x)*
Any combination of:
...
<book-meta>
...
<book-title-group>...</book-title-group>
...
<funding-group>
<award-group id="gs1" >
<funding-source>National Institutes of Health</funding-source>
<award-id>GM18458</award-id>
</award-group>
<award-group id="gs2">
<funding-source>National Science Foundation</funding-source>
<award-id>DMS-0204674</award-id>
<award-id>DMS-0244638</award-id>
</award-group>
</funding-group>
</book-meta>
...
JATS-funding1.ent