1. The Medicare drug benefit coverage gap: the basics Publication: Washington, D.C. : George Washington University, [2011] Subject(s): Insurance Coverage -- economicsInsurance Coverage -- legislation & jurisprudenceInsurance, Pharmaceutical Services -- economicsInsurance, Pharmaceutical Services -- legislation & jurisprudenceMedicare Part D -- economicsMedicare Part D -- legislation & jurisprudenceDrug Costs -- statistics & numerical dataDrug Prescriptions -- economicsFinancing, Personal -- economicsFinancing, Personal -- legislation & jurisprudenceHumansUnited States