Magnetocardiograms and their variation over the chest in normal subjects.
D004562:Electrocardiography; D005069:Evaluation Studies as Topic; D006321:Heart / Q000502:physiology* / Q000503:physiopathology; D006801:Humans; D008280:Magnetics / Q000295:instrumentation; D008297:Male; D008722:Methods; D011187:Posture; D013909:Thorax