1. Department of Cardiology, University Hospital Basel, University of Basel , Petersgraben 4, 4031 Basel , Switzerland
2. Cardiovascular Research Institute Basel, University Hospital Basel, University of Basel , Spitalstrasse 2, 4056 Basel , Switzerland
3. Department of Cardiology, St Bartholomew’s Hospital , London , UK
4. Department of Cardiac, Thoracic and Vascular Sciences and Public Health, University of Padova , Padova , Italy
5. Department of Cardiology, University Hospital of Verona , Verona , Italy
6. Department of Cardiology, Medical Centre Teknon, Grupo Quironsalud , Barcelona , Spain
7. Department of Cardiology, Careggi University Hospital , Florence , Italy
8. Department of Electrophysiology, Cardiology and Angiology Center Bethanien , Frankfurt , Germany