title: Cardiologists send up a trial balloon in new efforts to relieve heart failure.
mesh_terms: D001024:Aortic Valve Stenosis / Q000628:therapy*; D004106:Dilatation / Q000379:methods; D006333:Heart Failure / Q000628:therapy*; D006801:Humans; D008946:Mitral Valve Stenosis / Q000628:therapy*