Source:http://linkedlifedata.com/resource/umls/id/C0282495
MSH: Coexistence of numerous distinct ethnic, racial, religious, or cultural groups within one social unit, organization, or population. (From American Heritage Dictionary, 2d college ed., 1982, p955),NCI: The inevitable variety in customs, attitudes, practices, and behaviors that exists among groups of individuals from different ethnic, racial, or national backgrounds who come into contact within a social unit, organization, or population.