Surgical vs. Transcatheter Aortic Valve Replacement with the Sapien XT Valve and NovoFlex Delivery System in High-risk patients with Severe Aortic Stenosis

Latib, A; Bertoldt, Lf; Giacomini, A; Mussardo, M; Cioni, M; Ielasi, A; Godino, C; Covello, Rd; Takagi, K; Shannon, J; Buchanan, Gl; Sacco, Fm; Ielasi, A; Montorfano, M; Chieffo, A; Maisano, F; Alfieri, Ottavio; Colombo, A.