title: Transient QRS changes in variant angina simulating acute myocardial infarction.
mesh_terms: D000788:Angina Pectoris, Variant / Q000175:diagnosis*; D003329:Coronary Vasospasm / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis*