1. 13. Concha M, Aranda PJ, Casares J, Merino C, Alados P, Munoz I, et al. The Ross procedure. Journal of Cardiac Surgery 2004; 19: 401–409. 14. Sacks MS, Schoen FJ, Mayer JEJ. Bioengineering challenges for heart valve tissue engineering. Annual Review of Biomedical Engineering 2009; 11: 289–313. 15. Schoen FJ. Mechanisms of fuction and disease of natural and replacement heart valves. Annual Review of Pathology—Mechanisms of Disease 2012; 7: 161–183. 16. Filova E, Straka F, Mirejovsky T, Masin J, Bacakova L. Tissue- engineered heart valves. Physiological Research 2009; 58: S141–S158. 17. Schoen FJ. Aortic valve structure-function correlations: role of elastic fibers no longer a stretch of the imagination. Journal of Heart Valve Disease 1997; 6: 1–6. 18. Rajamannan NM, Evans FJ, Aikawa E, Grande-Allen KJ, Demer LL, Heistad DD, et al. Calcific aortic valve disease: not simply a degenerative process. A review and agenda for research from the national heart and lung and blood institute aortic stenosis working group. Circulation 2011; 124: 1783–1791. 19. Weinberg EJ, Shahmirzadi D, Mofrad MRK. On the multiscale modeling of heart valve biomechanics in health and disease. Biomechanics and Modeling in Mechanobiology 2010; 9: 373–387. 20. Mavrilas D, Missirlis Y. An approach to the optimization of preparation of bioprosthetic heart valves. Journal of Biomechanics 1991; 24: 331–339. 21. Christie GW, Barratt-Boyes BG. Mechanical properties of porcine pulmonary valve leaflets: how do they differ from aortic leaflets? The Annals of Thoracic Surgery 1995; 60: S195–199. 22. Stradins P, Lacis R, Ozolanta I, Purina B, Ose V, Feldmane L, et al. Comparison of biomechanical and structural properties between human aortic and pulmonary valve. European Journal of CardioThoracic Surgery 2004; 26: 634–639. 23. Robinson PS, Tranquillo RT. Planar biaxial behavior of fibrin-based tissue-engineered heart valve leaflets. Tissue Engineering Part A 2009; 15: 2763–2772. 24. Matthews PB, Azadani AN, Jhun CS, Ge L, Guy TS, Guccione JM, et al. Comparison of porcine pulmonary and aortic root material properties. Annals of Thoracic Surgery 2010; 89: 1981–1989.