1. San Filippo Neri Hospital; Rome Italy
2. Vincenzo Monaldi Hospital; Naples Italy
3. Casilino Hospital; Rome Italy
4. Civil Hospital; Montebelluna Italy
5. Mater Salutis Hospital; Legnago Italy
6. Civil Hospitals; Brescia Italy
7. Department of Cardiac Thoracic and Vascular Sciences; University of Padua; Italy
8. Clinical Department; Biotronik Italia S.p.a Milan Italy