title: [Electrocardiographic study of the site of origin of ventricular extrasystoles in chronic Chagas' heart disease].
mesh_terms: D000293:Adolescent; D000328:Adult; D014355:Chagas Disease / Q000150:complications / Q000503:physiopathology*; D002648:Child; D002908:Chronic Disease; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006331:Heart Diseases / Q000209:etiology / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Estudo electrocardiográfico do local de origem das extrassístoles ventriculares na cardiopatia chagásica crónica.