title: [Two types of P wave configuration in one ECG].
authors.affiliation: Pododdział Intensywnego Nadzoru Kardiologicznego Szpitala Czerniakowskiego, ul. Stepińska 19/25, 00-739 Warszawa. jzambrzycki@wp.pl
authors.forename: Jan
authors.initials: J
authors.lastname: Zambrzycki
mesh_terms: D001281:Atrial Fibrillation / Q000175:diagnosis* / Q000503:physiopathology; D015716:Electrocardiography, Ambulatory; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged