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Date: 2013-03-15 00:00:53Medicine Electrocardiography T wave QRS complex P wave Left ventricular hypertrophy Ultraviolet National Health and Nutrition Examination Survey PR interval Cardiac electrophysiology Circulatory system Biology | NHANES II ELECTROCARDIOGRAPHY DATA FILE DOCUMENTATIONAdd to Reading ListSource URL: www.cdc.govDownload Document from Source WebsiteFile Size: 139,11 KBShare Document on Facebook |