1. Heart Failure Unit, Department of Cardiology, AORN Dei Colli-Monaldi Hospital, 84121 Naples, Italy
2. Department of Medicine, Division of Cardiology, Medical University of South Carolina, Charleston, SC 158155, USA
3. Heart Transplant Unit, Department of Cardiac Surgery and Transplant, AORN Dei Colli-Monaldi Hospital, 84121 Naples, Italy
4. Cardiac Surgery Unit, Department of Cardiac Surgery and Transplant, AORN Dei Colli-Monaldi Hospital, 84121 Naples, Italy