*Dates
*MeSH (Medical Subject Headings)
==== Sponsors ====
The corresponding node is:
-<sponsors>
-<lead_sponsor>
<agency>National Center for Research Resources (NCRR)</agency>
<agency_class>NIH</agency_class>
</lead_sponsor>
</sponsors>
==== Eligibility ====
The corresponding node is:
-<eligibility>
-<criteria>