title: The QRS loop in left anterior and posterior hemiblocks. Vectorcardiographic study during selective coronary arteriography.
mesh_terms: D000328:Adult; D017023:Coronary Angiography; D003327:Coronary Disease / Q000503:physiopathology; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014672:Vectorcardiography