Preliminary Clinical and Hemodynamic Results after Mitral Valve Replacement Using St. Jude Medical Prostheses in Comparison with the Björk-Shiley Valve - Horstkotte, D; Haerten, K; Herzer, J A; Seipel, L; Bircks, W; Loogen, F (The Thoracic and Cardiovascular Surgeon, 1981)