title: ECG response: October 21, 2014.
mesh_terms: D001283:Atrioventricular Node / Q000503:physiopathology*; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology*; D006801:Humans; D055815:Young Adult