title: Invited commentary.
authors: University of Alberta Hospital, 2D4.37 Walter MacKenzie Health Sciences Centre, 8440 112th St, Edmonton, AB, Canada T6G 2B7. dbross@cha.ab.ca
authors: David B
authors: DB
authors: Ross
mesh_terms: D000369:Aged, 80 and over; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D001705:Bioprosthesis; D005260:Female; D005500:Follow-Up Studies; D015577:Geriatric Assessment; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000379:methods / Q000401:mortality*; D006801:Humans; D008297:Male; D011475:Prosthesis Failure; D016019:Survival Analysis; D016896:Treatment Outcome; D014463:Ultrasonography