1 Department of Cardiothoracic Transplantation, Royal Brompton & Harefield NHS Foundation Trust, London, UK. Electronic address: louit@doctors.net.uk.
2 Department of Cardiothoracic Transplantation, Royal Brompton & Harefield NHS Foundation Trust, London, UK.
3 Department of Cardiothoracic Transplantation, Royal Brompton & Harefield NHS Foundation Trust, London, UK; Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK; Department of Anaesthesia and Intensive Therapy, Semmelweis University, Budapest, Hungary.