Outcome of patients with hypertrophic obstructive cardiomyopathy after percutaneous transluminal septal myocardial ablation and septal myectomy surgery11Supported, in part, by grant NCC9-60 from the National Aeronautics and Space Administration, Houston, Texas, Grant #9951522V from the America Heart Association Ohio Local Chapter, Columbus, Ohio and Grant #R01 HL56688-01A1 from the National Institutes of Health, Bethesda, Maryland.22Presented, in part, at the 49th Annual Scientific Sessions of American College of Cardiology, March 2000, Anaheim, California.