title: Repeat variability of axial lead electrocardiograms.
mesh_terms: D006332:Cardiomegaly / Q000503:physiopathology; D004562:Electrocardiography; D004566:Electrodes; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D006984:Hypertrophy; D008297:Male; D008722:Methods; D014672:Vectorcardiography; D016276:Ventricular Function