Trends in utilization rates of the various imaging modalities in emergency departments: nationwide Medicare data from 2000 to 2008.

Rao VM, Levin DC, Parker L, Frangos AJ, Sunshine JH. Trends in utilization rates of the various imaging modalities in emergency departments: nationwide Medicare data from 2000 to 2008. J Am Coll Radiol. 2011 Oct; 8(10):706-9.

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