title: Letter by Pfeiffer et al Regarding Article, "Early Structural Valve Deterioration of Mitroflow Aortic Bioprosthesis: Mode, Incidence, and Impact on Outcome in a Large Cohort of Patients".
authors.affiliation: Department of Cardiac Surgery, Paracelsus Medical University, Klinikum Nürnberg, Nuremberg, Germany.
authors.forename: Steffen
authors.initials: S
authors.lastname: Pfeiffer
authors.affiliation: Department of Cardiac Surgery, Paracelsus Medical University, Klinikum Nürnberg, Nuremberg, Germany.
authors.forename: Theodor
authors.initials: T
authors.lastname: Fischlein
authors.affiliation: Department of Cardiac Surgery, Paracelsus Medical University, Klinikum Nürnberg, Nuremberg, Germany.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Santarpino
mesh_terms: D000818:Animals; D001024:Aortic Valve Stenosis / Q000401:mortality* / Q000601:surgery*; D001705:Bioprosthesis / Q000706:statistics & numerical data*; D005260:Female; D019918:Heart Valve Prosthesis Implantation / Q000379:methods* / Q000401:mortality*; D006801:Humans; D008297:Male