William Nelson ECG Quiz.
D000293:Adolescent; D003951:Diagnostic Errors / Q000517:prevention & control*; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006331:Heart Diseases / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male