title: [Electrocardiographic studies of persons of very advanced age].
mesh_terms: D000368:Aged; D000375:Aging; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male
vernacular_title: Badania elektrokardiograficzne u osób w bardzo podeszłym wieku.