title: [Fixed atrioventricular block in children].
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006325:Heart Atria; D006327:Heart Block / Q000175:diagnosis*; D006352:Heart Ventricles; D006801:Humans; D007223:Infant; D008297:Male; D013997:Time Factors
vernacular_title: Twały blok przedsionkowo-komorowy serca u dzieci.