title: Directions for improvement of substitute heart valves: National Heart, Lung, and Blood Institute's Working Group report on heart valves.
authors.affiliation: Department of Surgery, University of Pennsylvania, Philadelphia, USA.
authors.forename: L H
authors.initials: LH
authors.lastname: Edmunds
authors.forename: S
authors.initials: S
authors.lastname: Mckinlay
authors.forename: J M
authors.initials: JM
authors.lastname: Anderson
authors.forename: T H
authors.initials: TH
authors.lastname: Callahan
authors.forename: J H
authors.initials: JH
authors.lastname: Chesebro
authors.forename: E A
authors.initials: EA
authors.lastname: Geiser
authors.forename: D M
authors.initials: DM
authors.lastname: Makanani
authors.forename: L V
authors.initials: LV
authors.lastname: McIntire
authors.forename: W Q
authors.initials: WQ
authors.lastname: Meeker
authors.forename: G K
authors.initials: GK
authors.lastname: Naughton
authors.forename: J A
authors.initials: JA
authors.lastname: Panza
authors.forename: F J
authors.initials: FJ
authors.lastname: Schoen
authors.forename: P
authors.initials: P
authors.lastname: Didisheim
mesh_terms: D004867:Equipment Design; D006350:Heart Valve Prosthesis / Q000592:standards*; D006801:Humans; D009316:National Institutes of Health (U.S.); D014481:United States