Ultrasound nearly as common as standard x-ray equipment at nation's hospitals--study.
Wagner
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D002201:Capital Expenditures / Q000706:statistics & numerical data; D003625:Data Collection; D003952:Diagnostic Imaging / Q000295:instrumentation; D004059:Diffusion of Innovation; D004865:Equipment and Supplies, Hospital / Q000600:supply & distribution*; D014463:Ultrasonography / Q000295:instrumentation*; D014481:United States