title: Vulnerable populations: who are they?
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D005382:Financing, Personal; D006801:Humans; D019458:Insurance Coverage; D008329:Managed Care Programs; D008875:Middle Aged; D014481:United States; D035862:Vulnerable Populations / Q000208:ethnology