title: HMOs in the Medicare market. Part 2--Operational issues.
mesh_terms: D000368:Aged; D006123:Group Practice / Q000458:organization & administration*; D006125:Group Practice, Prepaid / Q000458:organization & administration*; D006279:Health Maintenance Organizations / Q000458:organization & administration*; D006801:Humans; D008389:Marketing of Health Services; D006278:Medicare / Q000458:organization & administration*; D010865:Pilot Projects; D014481:United States; D014600:Utilization Review