title: Closed aortic valvotomy in infants: late results.
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000151:congenital / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008722:Methods