1. Cardiovascular science division, Faculty of Medicine, National Heart and Lung Institute; Imperial College London; London Greater London United Kingdom
2. Interventional Cardiology Department, EMO GVM Centro Cuore Columbus; Milan Italy
3. Interventional Cardiology Department; San Raffaele Scientific Institute; Milan Italy
4. Interventional Cardiology Department, Azienda Ospedaliera Bolognini; Seriate Bergamo Italy
5. Interventional Cardiology Department, Istituto Clinico San Ambrogio; Milan Italy