title: The irregular heart 1971. New techniques and concepts.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D002037:Bundle-Branch Block / Q000175:diagnosis; D004562:Electrocardiography; D004566:Electrodes; D006327:Heart Block / Q000175:diagnosis; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008564:Membrane Potentials; D008722:Methods