Our elderly are unique.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008136:Longevity; D008297:Male; D008875:Middle Aged; D009026:Mortality; D014481:United States