The impact of COVID-19 pandemic on aortic valve surgical service: a single centre experience oleh Dimitrios Vlastos, Ishaansinh Chauhan, Kwabena Mensah, Maria Cannoletta, Athanasios Asonitis, Ahmed Elfadil, Mario Petrou, Anthony De Souza, Cesare Quarto, Sunil K. Bhudia, Ulrich Rosendahl, John Pepper, George Asimakopoulos