title: HMOs--the good guys again?
authors: M W
authors: MW
authors: Serafini
mesh_terms: D000368:Aged; D014487:Centers for Medicare and Medicaid Services, U.S.; D003256:Community Participation; D006279:Health Maintenance Organizations / Q000191:economics* / Q000639:trends; D006299:Health Services for the Aged / Q000191:economics*; D006801:Humans; D006278:Medicare / Q000191:economics / Q000458:organization & administration*; D020398:Medicare Part C / Q000191:economics; D011907:Rate Setting and Review; D014481:United States