title: EKG of the month.
mesh_terms: D000328:Adult; D001146:Arrhythmia, Sinus / Q000175:diagnosis*; D002037:Bundle-Branch Block / Q000175:diagnosis*; D004562:Electrocardiography; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D008297:Male