title: [Echocardiographic studies on malfunction of the Björk-Shiley mitral valve prosthesis (author's transl)].
mesh_terms: D000328:Adult; D004452:Echocardiography; D005260:Female; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000503:physiopathology; D011183:Postoperative Complications / Q000503:physiopathology