Utilization review: the Blue Cross perspective.
D054598:Blue Cross Blue Shield Insurance Plans; D003211:Concurrent Review; D006761:Hospitals / Q000706:statistics & numerical data; D007348:Insurance, Health / Q000706:statistics & numerical data*; D007349:Insurance, Health, Reimbursement / Q000706:statistics & numerical data*; D007350:Insurance, Hospitalization; D014481:United States; D014600:Utilization Review / Q000379:methods