The natural history of pulmonary valvular stenosis. Serial cardiac catheterizations in 21 children.
D000293:Adolescent; D006328:Cardiac Catheterization; D006332:Cardiomegaly / Q000209:etiology; D009202:Cardiomyopathies; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D004813:Epidemiology; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D011379:Prognosis; D011652:Pulmonary Circulation; D011666:Pulmonary Valve Stenosis / Q000175:diagnosis*; D013902:Radiography, Thoracic; D014655:Vascular Resistance