Invasive Versus Echocardiographic Evaluation of Transvalvular Gradients Immediately Post-Transcatheter Aortic Valve Replacement: Demonstration of Significant Echocardiography-Catheterization Discordance. (July 2019) - Abbas, Amr E.; Mando, Ramy; Hanzel, George; Gallagher, Michael; Safian, Robert; Hanson, Ivan; Almany, Steven; Pibarot, Philippe; Dalal, Pratik; Vivacqua, Alessandro; Sakwa, Marc; Shannon, Francis