1. Clinical results of pericardial xenograft valves: the Ionescu-Shiley and Hancock valves;Goldman;Can J Cardiol,1988
2. Porcine versus pericardial bioprostheses: A comparison of late results in 1593 patients;Pelletier;Ann Thorac Surg,1989
3. Pericardial hetero-grafts: Why do these valves fail?;Trowbridge;J Thorac Cardiovasc Surg,1988
4. Reoperation for bioprostheses: an analysis of 1831 valves over a 12-year period;Pelletier,1990
5. The Carpentier-Edwards bovine pericardial bioprosthesis: clinical experience with 301 valve replacements;Pelletier,1990