[Shapes of QRS loop in its initial stage lacking right thoracic induction wave R].
D003327:Coronary Disease / Q000175:diagnosis; D004562:Electrocardiography; D006801:Humans; D006973:Hypertension / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis; D014672:Vectorcardiography