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CDISC and NCI EVS have long been partners at curating and registering CDISC controlled terminologies in the NCI Thesaurus (NCIt), hence the NCI Metathesaurus (NCIm). As a matter of fact, a careful examination into NCIm reveals the relationship between CDISC and UCUM exists. A search of the term millimeter of mercury shows the evidence (source: http://1.usa.gov/1zoRA96):
At this point, we gather these about the NCI EVS:
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