Illinois hospitals pull out of contracts with Blues.
D054598:Blue Cross Blue Shield Insurance Plans / Q000191:economics*; D003284:Contract Services / Q000458:organization & administration*; D005376:Financial Management / Q000458:organization & administration*; D005377:Financial Management, Hospital; D007087:Illinois; D007350:Insurance, Hospitalization / Q000191:economics*; D007357:Insurance, Physician Services / Q000191:economics*