Affiliation: | 1. Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, Middlesex, UK;2. Department of Cardiothoracic Surgery, University Hospital of Cologne, Cologne, Germany;3. Penn State Hershey Heart and Vascular Institute, Hershey, PA, USA |