title: Letter: Variant variant angina pectoris.
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis*; D001145:Arrhythmias, Cardiac / Q000209:etiology; D001026:Coronary Artery Bypass; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006801:Humans; D012008:Recurrence