[1] L. H. Edmunds Jr., R. E. Clark, L. E. Cohn, et al., “Guidelines for Reporting Morbidity and Mortality after Cardiac Valvular Operations,” The Annals of Thoracic Surgery, Vol. 62, No. 3, 1996, pp. 932-935
[2] R. O. Bonow, B. Carabello, K. Chatterjee, et al., “Focused Update Incorporated into the ACC/AHA 2006 Guidelines for the Management of Patients with Valvular Heart Disease,” Circulation, Vol. 118, 2008, pp. e523-e661. http://dx.doi.org/10.1161/CIRCULATIONAHA.108.190748
[3] L. H. Cohn, et al., “Fifteen-Year Experience with 1678 Hancock Porcine Bioprosthetic Heart Valve Replacements,” Annals of Surgery, Vol. 210, No. 4, 1989, pp. 435-443.
http://dx.doi.org/10.1097/00000658-198910000-00003
[4] F. Santini, G. B. Luciani, et al., “Over Twenty-Year Follow-Up of the Standard Hancock Porcine Bioprosthesis Implanted in the Mitral Position,” The Annals of Thoracic Surgery, Vol. 71, Suppl. 5, 2001, pp. S232-235.
http://dx.doi.org/10.1016/S0003-4975(01)02524-3
[5] J. M. Bernal, J. M. Rabasa, et al., “Valve-Related Complications with the Hancock I Porcine Bioprosthesis, A Twelve- to Fourteen-Year Follow-Up Study,” The Journal of Thoracic and Cardiovascular Surgery, Vol. 101, No. 5, 1991, pp. 871-880.
[6] C. Valfre, P. Lus, G. Minniti, et al., “The Fate of Hancock II Porcine Valve Recipients 25 Years after Implant,” European Journal Cardio-Thoracic Surgery, Vol. 38, No., 2010, pp. 141-146.
http://dx.doi.org/10.1016/j.ejcts.2010.01.046
[7] J. Butany, B. Dias, P. Iyengar, et al., “Acute Mitral Regurgitation Due to a Torn Porcine Bioprosthetic Cusp,” Circulation, Vol. 105, 2002, pp. e58-e60.
[8] H. Niinami, Y. Naito, H. Koyanagi, et al., “Malfunction of a Hancock Bioprosthesis in the Mitral Position 24 Years after Initial Implantation,” The Journal of Heart Valve Disease, Vol. 9, No. 6, 2000, pp. 810-812.