1 Cardiac Transplantation Unit, Department of Cardiac Surgery and Transplantation, Ospedali dei Colli, Naples, Italy.
2 Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy.
3 Clinical Department of Internal Medicine, Specialistic Units and Regional Referring Centre for Clinical Immunology of Organ Transplantation (LIT), University Department of Advanced Medical and Surgical Sciences (DAMSS), University of Campania "Luigi Vanvitelli", Naples, Italy.