title: [Pattern and significance of electrocardiographic changes in children with rheumatoid arthritis].
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male
vernacular_title: Obraz i znaczenie zmian elektrokardiograficznych u dzieci chorych na reumatoidalne zapalenie stawów.