Variations in the use of cardiac procedures: what is the explanation?
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Ritchie
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JL
D006328:Cardiac Catheterization / Q000706:statistics & numerical data*; D006297:Health Services Accessibility; D006787:Hospitals, Veterans; D006801:Humans; D017202:Myocardial Ischemia / Q000601:surgery*; D010818:Practice Patterns, Physicians'; D014481:United States