title: Medicare PPO's off to a slow start.
authors.forename: Ken
authors.initials: K
authors.lastname: Terry
mesh_terms: D006279:Health Maintenance Organizations / Q000458:organization & administration; D006801:Humans; D006278:Medicare / Q000458:organization & administration*; D011243:Preferred Provider Organizations / Q000191:economics / Q000458:organization & administration*; D014481:United States