title: Valvular heart disease: the technologic dilemma.
authors.forename: W S
authors.initials: WS
authors.lastname: Frankl
mesh_terms: D006328:Cardiac Catheterization; D015150:Echocardiography, Doppler; D006349:Heart Valve Diseases / Q000175:diagnosis* / Q000601:surgery; D006801:Humans