Balloon Sizing for Transcatheter Aortic Valve Implantation Using 3rd Generation Valves, Does It Still Work Research Authors Marwan S Mahmoud, Yehia Taha Kishk, Magdy Algowhary, Heba M Elnaggar, Matthias Kullmer, Mohamad Dia, Wolfgang Schoels Research Department Department of Cardiology Research Journal International Medical Journal 28 (6) Research Member Heba Mahmoud Abdel-Mohsen El-Naggar Research Year 2021