1. Department of Cardiovascular Services Guy's and St. Thomas' Hospital London UK
2. School of Biomedical Engineering and Imaging Sciences, King's College London London UK
3. Department of Cardiology, St. Richard's Hospital University Hospitals Sussex NHS Foundation Trust Worthing UK
4. Department of Cardiology Medway Maritime Hospital Gillingham UK
5. South West Cardiothoracic Centre University Hospitals Plymouth NHS Trust Plymouth UK