Fouly, Mohamed, and Tarek Khairy. 2022. “The Performance of the Supra-Annular Top-Hat Aortic Valves Compared to the Standard Carbomedics Valves”. The Egyptian Cardiothoracic Surgeon 4 (3), 46 - 50. https://doi.org/10.35810/ects.v4i3.226.