1. Department of Cardiology, Freeman Hospital, Newcastle Upon Tyne, UK
2. University of Santiago de Compostela, Santiago, Spain
3. Department of Cardiology, Hospital Clínico San Carlos, Madrid, Spain
4. Department of Cardiothoracic Surgery, Freeman Hospital, Newcastle Upon Tyne, UK
5. Department of Cardiothoracic Transplantation, Freeman Hospital, Newcastle Upon Tyne, UK
6. Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK