title: Invited commentary.
authors.affiliation: Department of Cardiovascular Surgery, Ringstr 49, 53721 Siegburg, Germany. hans-joachim.geissler@helios-kliniken.de
authors.forename: Hans J
authors.initials: HJ
authors.lastname: Geissler
mesh_terms: D001024:Aortic Valve Stenosis / Q000209:etiology / Q000401:mortality / Q000601:surgery*; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D018579:Patient Selection; D011474:Prosthesis Design; D017755:Prosthesis Fitting; D015996:Survival Rate