title: Invited Commentary.
authors.affiliation: Division of Cardiac, Thoracic, and Vascular Surgery, Columbia University Medical Center, 177 Fort Washington Ave, MHB 7GN-435, New York, NY10032. Electronic address: mb3851@cumc.columbia.edu.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Borger
mesh_terms: D001024:Aortic Valve Stenosis / Q000473:pathology* / Q000628:therapy*; D001705:Bioprosthesis; D005260:Female; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male