title: Percutaneous balloon valve dilatation.
authors.affiliation: Charles A Dana Research Institute, Beth Israel Hospital, Boston, Massachusetts 02215.
authors.forename: M J
authors.initials: MJ
authors.lastname: Levine
authors.forename: R G
authors.initials: RG
authors.lastname: McKay
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve; D002404:Catheterization; D002648:Child; D006349:Heart Valve Diseases / Q000628:therapy*; D006801:Humans; D008943:Mitral Valve; D011379:Prognosis