title: [Electrocardiographic signs of first degree sinoatrial block].
authors.forename: A V
authors.initials: AV
authors.lastname: Babin
authors.forename: G V
authors.initials: GV
authors.lastname: Grudtsyn
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012848:Sinoatrial Block / Q000175:diagnosis* / Q000503:physiopathology
vernacular_title: Elektrokardiograficheskie priznaki sinoatrial'noĭ blokady I stepeni.