Response to Letter Regarding Article, "Postprocedural Aortic Regurgitation in Balloon-Expandable and Self-Expandable Transcatheter Aortic Valve Replacement Procedures. Issue 2 (13th January 2015) - Van Belle, Eric; Juthier, Françis; Susen, Sophie; Vincentelli, André; Dallongeville, Jean; Iung, Bernard; Eltchaninoff, Hélène; Laskar, Marc; Leprince, Pascal; Lievre, Michel; Banfi, Carlo; Auffray, Jean-Luc; et al.