Buddy wire pre-dilatation with peripheral balloon in an extremely calcified aortic valve. Implications for TAVI. (1st November 2015) - Latsios, George; Toutouzas, Konstantinos; Synetos, Andreas; Mastrokostopoulos, Antonios; Stathogiannis, Konstantinos; Aggeli, Constantina; Papaioannou, Spyridon; Papanikolaou, Aggelos; Tsiamis, Eleftherios; Tousoulis, Dimitris