title: Transcatheter aortic valve implantation. Balancing enthusiasm and caution.
authors.forename: John G
authors.initials: JG
authors.lastname: Webb
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D006328:Cardiac Catheterization / Q000379:methods*; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000379:methods* / Q000401:mortality; D006801:Humans; D018570:Risk Assessment