title: A quantitative analysis of the vectorcardiogram in normal and left ventricular hypertrophy  groups using the Frank and the Takayasu lead systems.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006332:Cardiomegaly / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014672:Vectorcardiography