title: Comment on "copayments for ambulatory care: penny-wise and pound-foolish".
mesh_terms: D000553:Ambulatory Care; D005382:Financing, Personal; D006296:Health Services / Q000706:statistics & numerical data; D006760:Hospitalization; D006801:Humans; D008484:Medicaid; D009313:National Health Programs; D013223:Statistics as Topic; D014481:United States