title: Out-of-pocket medical spending and Charon's obol.
authors.forename: J Michael
authors.initials: JM
authors.lastname: McWilliams
mesh_terms: D005260:Female; D005102:Health Expenditures / Q000706:statistics & numerical data*; D006299:Health Services for the Aged / Q000191:economics*; D006801:Humans; D008297:Male