title: Report from the Joint Study on the Natural History of Congenital Heart Defects. IV. Clinical course. Introduction.
mesh_terms: D000328:Adult; D001024:Aortic Valve Stenosis / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D006345:Heart Septal Defects, Ventricular / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D011379:Prognosis; D011666:Pulmonary Valve Stenosis / Q000175:diagnosis*