A Retrospective Analysis of Causes and Outcomes of Percutaneous Closure Device Failure – A Real Life Experience from a Large Volume CENTRE. (December 2019) - Gradinariu, George; Lyons, Oliver; Johnson, Oscar; Bujoreanu, Iulia; Shalhoub, Joseph; Tyrrell, Mark; Modarai, Bijan; Sandford, Becky; ,