title: Electrocardiogram of the month.
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D008297:Male; D010493:Pericarditis / Q000175:diagnosis; D013898:Thoracic Injuries / Q000175:diagnosis*