1. Division of Interventional Cardiology; University of Turin; Turin; Italy
2. Division of Cardiology; Mauriziano Hospital; Turin; Italy
3. Division of Cardiology; Giovanni Bosco Hospital; Turin; Italy
4. Division of Cardiology; Villa Maria Cecilia Hospital; Cotignola; Ravenna; Italy
5. Division of Cardiology; Cardiovascular Center Onze Lieve Vrouw Ziekenhouis; Aalst; Belgium
6. Division of Cardiology; University of Sheffield; Sheffield; United Kingdom
7. Division of Cardiology; Scripps Clinic; La Jolla; California