title: [Clinical importance of atrio-ventricular block of the 1st degree].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001161:Arteriosclerosis / Q000150:complications; D001344:Autopsy; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D012214:Rheumatic Heart Disease / Q000150:complications
vernacular_title: Klinicheskoe znachenie predserdno-zheludochkovoĭ blokady I stepeni.