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Salizzoni, S; Bajona, P; Zehr, KJ; Anderson, WD; Vandenberghe, S; Speziali, G (2009). Transapical, off-pump, removal of the native aortic valve. A large animal study. Journal of thoracic and cardiovascular surgery, 138(2), pp. 468-473. St. Louis, Mo.: Mosby 10.1016/j.jtcvs.2009.03.057
