1. Department of Cardiology; Villa Bianca Hospital; Trento Italy
2. Cardiovascular Center; Trieste and University of Trieste; Trieste Italy
3. Division of Cardiology; Department of Medicine; University and Public Hospital; Verona Italy
4. Cardiology Service; CMSR Veneto Medical Center; Vicenza Italy
5. Department of Cardiology; S. Martino Hospital; Belluno Italy
6. Cardiology Unit; “Spedali Civili” Hospital; Brescia Italy
7. Heart Failure Clinic; Division of Cardiology/C.C.U.; San Camillo Hospital; Rome Italy
8. Department of Translational Medical Sciences; Federico II; University Hospital; School of Medicine; Naples Italy
9. Greenberg Division of Cardiology; Weill Cornell Medical College; New York New York