Columbia sings the (Ohio) blues.
Asplund
J
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D054598:Blue Cross Blue Shield Insurance Plans / Q000458:organization & administration*; D006273:Health Facility Merger; D006777:Hospitals, Proprietary / Q000458:organization & administration*; D009096:Multi-Institutional Systems / Q000458:organization & administration*; D009820:Ohio; D010067:Ownership