1. Department of Cardiology; Second University of Naples - Monaldi Hospital; Naples Italy
2. Department of Cardiovascular and Respiratory Disease; University La Sapienza; Rome Italy
3. Department of Internal Medicine, Cardiovascular and Immunological Sciences; University Federico II; Naples Italy
4. Department of Pediatric Cardiology and Congenital Heart Disease; Deutsches Herzzentrum; München Germany
5. Heart Department; University of Salerno; Salerno Italy
6. Department of Pathophysiology; Erasme University Hospital; Brussels Belgium