The uninsured: who are they?
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006264:Health Benefit Plans, Employee / Q000331:legislation & jurisprudence; D006801:Humans; D008297:Male; D017057:Medically Uninsured / Q000331:legislation & jurisprudence / Q000706:statistics & numerical data*; D008875:Middle Aged; D014481:United States