Individual(s) responsible for the intellectual content of the work reported in the article
Multiple co-PIs can be included in successive <principal-investigator> elements.
The <principal-award-recipient> may or may not be the same as the <principal-investigator>, for example, a grant could be awarded to a Department or to individual A and individual B could serve as the PI. When the same individual serves in both roles, the name should be listed in both places.
<!ELEMENT principal-investigator (#PCDATA %principal-investigator-elements;)* >
(#PCDATA | name | string-name)*
Any combination of:
... <book-meta> ... <book-title-group>...</book-title-group> ... <funding-group> <award-group id="NIA94" award-type="grant"> <funding-source>National Institute on Aging</funding-source> <award-id>AG20962</award-id> <principal-investigator> <string-name><given-names>Sharon R.</given-names> <surname>Kaufman</surname></string-name> </principal-investigator> </award-group> ... </funding-group> </book-meta> ...