High Residual Gradient Following Self-expandable Transcatheter Aortic Valve-in-valve Implantation: Risk Factor Analysis, Outcomes and Survival. (13th February 2020) - Stankowski, Tomasz; Aboul-Hassan, Sleiman Sebastian; Erkenov, Temirlan; Herwig, Volker; Harnath, Axel; Muehle, Anja; Fritzsche, Dirk; Perek, Bartlomiej