Balloon valvuloplasty in children with dysplastic pulmonary valves.
D000800:Angioplasty, Balloon; D006328:Cardiac Catheterization; D002675:Child, Preschool; D004106:Dilatation / Q000379:methods; D006801:Humans; D007223:Infant; D011664:Pulmonary Valve / Q000002:abnormalities*; D011666:Pulmonary Valve Stenosis / Q000151:congenital* / Q000628:therapy