Study links HMO market share with decreases in the market-level availability and use of magnetic resonance imaging (MRI).
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Kemp
D003625:Data Collection; D006279:Health Maintenance Organizations; D006297:Health Services Accessibility; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000706:statistics & numerical data*; D008329:Managed Care Programs; D014481:United States