The limits of medical care.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D001900:Boston; D002648:Child; D002675:Child, Preschool; D006297:Health Services Accessibility / Q000639:trends*; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D009026:Mortality; D012923:Social Class; D044465:White People