title: Medicare Part D: a successful start with room for improvement.
authors.forename: Dana P
authors.initials: DP
authors.lastname: Goldman
authors.forename: Geoffrey F
authors.initials: GF
authors.lastname: Joyce
mesh_terms: D000368:Aged; D017047:Cost Sharing; D016527:Drug Costs; D004363:Drug Utilization / Q000191:economics* / Q000639:trends; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D017054:Insurance, Medigap; D054524:Medicare Part D; D016312:Treatment Refusal; D014481:United States