1 Clinical Department of Internal Medicine and Specialistics, Regional Referring Centre for Clinical Immunology of Organ Transplantation (LIT), University Department of Advanced Clinical and Surgical Sciences, University of Campania "Luigi Vanvitelli," Naples, Italy. Electronic address: claudio.napoli@unicampania.it.
2 Adult cardiac transplantation Unit, Department of Cardiac Surgery and Transplantation, Monaldi Hospital, Azienda Ospedali dei Colli, Naples, Italy.