title: [Natural course of a defect in the interventricular septum (an x-ray study)].
mesh_terms: D000790:Angiocardiography; D006328:Cardiac Catheterization; D002675:Child, Preschool; D006345:Heart Septal Defects, Ventricular / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D011651:Pulmonary Artery / Q000503:physiopathology; D011666:Pulmonary Valve Stenosis / Q000209:etiology
vernacular_title: O estestvennom techenii defekta mezhzheludochkovoĭ peregorodki (rentgenologicheskoe issledovanie).