1. Santa Maria del Carmine Hospital; Rovereto Italy
2. Santa Chiara Hospital; Trento Italy
3. Careggi Hospital; Firenze Italy
4. Cattinara Hospital; Trieste Italy
5. Sant'Andrea Hospital; Vercelli Italy
6. Civil Hospital; Conegliano Italy
7. Civil Hospital; Imperia Italy
8. Infermi Hospital; Biella Italy
9. San Martino Hospital; Genova Italy
10. Civil Hospital; Montebelluna Italy
11. Moriggia Pelascini Hospital; Gravedona Italy
12. St. Jude Medical Itsali; Agrate Brianza Italy
13. Department of Cardiac, Thoracic and Vascular Sciences; University of Padova; Padova Italy