title: Perspectives. Competitive Medicare: different models serve different goals.
mesh_terms: D003254:Consumer Advocacy; D006801:Humans; D018854:Managed Competition / Q000458:organization & administration*; D006278:Medicare / Q000191:economics / Q000458:organization & administration*; D018803:Models, Economic; D017146:Models, Organizational; D009937:Organizational Objectives; D014481:United States