The U.S. medical care safety net and who uses it.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003151:Community Health Centers / Q000706:statistics & numerical data*; D005260:Female; D019538:Health Care Surveys; D006297:Health Services Accessibility; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008507:Medically Underserved Area; D008875:Middle Aged; D009819:Office Visits / Q000706:statistics & numerical data*; D010044:Outpatient Clinics, Hospital / Q000706:statistics & numerical data*; D011320:Primary Health Care / Q000706:statistics & numerical data*; D014481:United States