title: EKG of the month: Pre-excitation or Wolff-Parkinson-White syndrome.
mesh_terms: D003951:Diagnostic Errors; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000503:physiopathology; D014927:Wolff-Parkinson-White Syndrome / Q000175:diagnosis / Q000503:physiopathology*