Source:http://linkedlifedata.com/resource/umls/id/C0026192
MSH: A subgroup having special characteristics within a larger group, often bound together by special ties which distinguish it from the larger group.,NCI: A minority is a group that is outnumbered by persons who do not belong to it, often people with different nationality, religion, culture or lifestyle from that of the mainstream in the society; racial or ethnic groups officially recognized by the U.S. government as minority populations.