title: Carefully negotiated IPA contracts strengthen an HMO's relationship.
mesh_terms: D002641:Chicago; D003284:Contract Services / Q000458:organization & administration*; D005376:Financial Management / Q000458:organization & administration*; D006279:Health Maintenance Organizations / Q000458:organization & administration*; D007193:Independent Practice Associations / Q000592:standards*; D011331:Private Practice / Q000592:standards*; D014481:United States