title: Closing the doughnut hole: no easy answers.
authors.affiliation: Wharton School, University of Pennsylvania, Philadelphia, USA. danzon@wharton.upenn.edu
authors.forename: Patricia M
authors.initials: PM
authors.lastname: Danzon
mesh_terms: D003132:Commerce / Q000331:legislation & jurisprudence*; D003362:Cost-Benefit Analysis; D016527:Drug Costs; D006801:Humans; D006278:Medicare / Q000331:legislation & jurisprudence*; D011057:Politics; D014481:United States