title: [A defect in a Björk-Shiley heart valve prosthesis].
authors: V
authors: V
authors: Topalov
authors: T
authors: T
authors: Petkov
mesh_terms: D003645:Death, Sudden / Q000473:pathology; D006350:Heart Valve Prosthesis / Q000401:mortality*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve; D008944:Mitral Valve Insufficiency / Q000473:pathology / Q000601:surgery; D011475:Prosthesis Failure
vernacular_title: Defekt na sŭrdechna klapna proteza B'ork-Sheĭli.