Learning Curve Analysis of Robotic-Assisted Mitral Valve Repair with COVID-19 Exogenous Factor: A Single Center Experience

Laura Giroletti 1, Valentina Brembilla 2, Ascanio Graniero 1, Giovanni Albano 3, Nicola Villari 3, Claudio Roscitano 3, Matteo Parrinello 3, Valentina Grazioli 4, Ettore Lanzarone 2, Alfonso Agnino 1