title: Invited commentary.
authors.affiliation: Department of Cardiovascular Surgery, Fu Wai Hospital and Cardiovascular Institute, Chinese Academy of Medical Sciences, 167 Northern Lishi Rd, Beijing, 100037, China. wgma@yahoo.com
authors.forename: Wei-Guo
authors.initials: WG
authors.lastname: Ma
mesh_terms: D000367:Age Factors; D001021:Aortic Valve; D001705:Bioprosthesis; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D011475:Prosthesis Failure; D012086:Reoperation; D016019:Survival Analysis; D016896:Treatment Outcome