title: Precordial surface electrocardiography. (A study of cases of old ischaemic heart diseases).
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis; D012008:Recurrence