title: William Nelson ECG quiz.
mesh_terms: D000369:Aged, 80 and over; D003951:Diagnostic Errors / Q000517:prevention & control; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis*; D015203:Reproducibility of Results