title: The door to Kaiser's closed system opens a crack as Permanente's physicians unite.
authors.forename: S
authors.initials: S
authors.lastname: Campbell
mesh_terms: D004465:Economic Competition; D006279:Health Maintenance Organizations / Q000191:economics / Q000458:organization & administration*; D017146:Models, Organizational; D010820:Physicians / Q000600:supply & distribution; D014481:United States