title: [Electrocardiogram of the month].
authors: Klinika Kardiologii CMKP, Warszawa, Poland.
authors: Ewa
authors: E
authors: Makowska
authors: Joanna
authors: J
authors: Rezler
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002037:Bundle-Branch Block / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D008297:Male