Response to Letter Regarding Article, "Wolff-Parkinson-White Syndrome in the Era of Catheter Ablation. Issue 20 (19th May 2015) - Pappone, Carlo; Vicedomini, Gabriele; Manguso, Francesco; Saviano, Massimo; Baldi, Mario; Pappone, Alessia; Ciaccio, Cristiano; Giannelli, Luigi; Ionescu, Bogdan; Petretta, Andrea; Vitale, Raffaele; Cuko, Amarild; et al.