Source:http://linkedlifedata.com/resource/umls/id/C0036878
MSH: The number of males and females in a given population. The distribution may refer to how many men or women or what proportion of either in the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine.,NCI: A description of the distribution of a trait between sexes in a population; number of males and females in a given population.