1. Heart Failure & Cardiac Rehabilitation Unit, Department of Cardiology, AORN dei Colli, Monaldi Hospital, Naples 80100, Italy
2. Heart Transplant Unit, Department of Cardiac Surgery and Transplantation. AORN dei Colli, Monaldi Hospital, Naples 80100, Italy
3. Rare Disease Unit, Department of Cardiology. AORN dei Colli, Monaldi Hospital, Naples 80100, Italy
4. Department of Translational Medical Sciences, Luigi Vanvitelli University, Naples 80100, Italy
5. Institute of Cardiovascular Sciences, University College of London, London, WC1E 6B, UK