1. Department of Electrophysiology, Royal Brompton and Harefield Hospitals, Guy's and St Thomas’ NHS Foundation Trust , London SW3 6NP , UK
2. Department of Electrophysiology, Auckland City Hospital , Auckland , New Zealand
3. Cardiac Morphology Unit, Royal Brompton Hospital , London , UK
4. Cardiology Unit, Santissima Annunziata Hospital , Savigliano ASL CN1 , Italy
5. Richard A. and Susan F. Smith Center for Outcomes Research, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
6. School of Biomedical Engineering and Imaging Sciences, King’s College London , London , UK
7. Department of Cardiology, Guy’s and St Thomas’ Hospital Guy's and St Thomas’ NHS Foundation Trust , London , UK
8. Department of Cardiology, Kings College Hospital , London SE5 9RS , UK
9. Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
10. Department of Cardiology, National Heart & Lung Institute, Imperial College London , London SW3 6LY , UK