Invited commentary.
D006348:Cardiac Surgical Procedures / Q000379:methods*; D002312:Cardiomyopathy, Hypertrophic / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D006346:Heart Septum / Q000601:surgery*; D006801:Humans; D016019:Survival Analysis; D014463:Ultrasonography