title: Trials, triumphs, and tribulations.
authors.forename: Spencer B
authors.initials: SB
authors.lastname: King
mesh_terms: D000369:Aged, 80 and over; D001024:Aortic Valve Stenosis / Q000401:mortality / Q000628:therapy*; D001705:Bioprosthesis; D006328:Cardiac Catheterization / Q000009:adverse effects / Q000295:instrumentation / Q000401:mortality; D019317:Evidence-Based Medicine; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods* / Q000401:mortality; D006801:Humans; D011474:Prosthesis Design; D016032:Randomized Controlled Trials as Topic; D013997:Time Factors; D016896:Treatment Outcome