The assurance of appropriate medical care: the role of Blue Cross and Blue Shield.
D054598:Blue Cross Blue Shield Insurance Plans / Q000191:economics*; D003363:Cost Control; D007350:Insurance, Hospitalization / Q000191:economics*; D007357:Insurance, Physician Services / Q000191:economics*; D009518:New York; D011785:Quality Assurance, Health Care / Q000191:economics*; D014600:Utilization Review / Q000191:economics*