Early perceptions of the electrocardiogram: from arrhythmia to infarction.
D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000266:history*; D002641:Chicago; D003327:Coronary Disease / Q000175:diagnosis / Q000266:history; D004562:Electrocardiography / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008131:London; D009203:Myocardial Infarction / Q000175:diagnosis / Q000266:history*; D009426:Netherlands