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[9]
Cross-sectional relations of electrocardiographic QRS duration to left ventricular dimensions[J] . Ravi Dhingra,Byung Ho Nam,Emelia J. Benjamin,Thomas J. Wang,Martin G. Larson,Ralph B. D’Agostino,Daniel Levy,Ramachandran S. Vasan. Journal of the American College of Cardiology . 2005 (5)