Two Blue Cross plans lead the way.
D054598:Blue Cross Blue Shield Insurance Plans / Q000191:economics*; D002641:Chicago; D005381:Financing, Organized; D006271:Health Facility Closure / Q000191:economics*; D006739:Hospital Administration / Q000191:economics*; D006742:Hospital Bed Capacity; D007350:Insurance, Hospitalization / Q000191:economics*; D009820:Ohio