Insurers competing with providers.
D003363:Cost Control / Q000379:methods; D006264:Health Benefit Plans, Employee / Q000458:organization & administration; D006279:Health Maintenance Organizations / Q000458:organization & administration; D006739:Hospital Administration / Q000639:trends*; D006754:Hospital Restructuring / Q000639:trends*; D007341:Insurance; D007343:Insurance Carriers; D007348:Insurance, Health / Q000458:organization & administration*; D011243:Preferred Provider Organizations / Q000458:organization & administration*; D014481:United States