title: ECG of the month. Clearing the air. Postextrasystolic T-wave changes.
authors: J I
authors: JI
authors: Martinez-Lopez
mesh_terms: D005117:Cardiac Complexes, Premature / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged