1. Renal Transplantation Center, “A. Vercellone,” Division of Nephrology Dialysis and Transplantation, Città Della Salute e Della Scienza Hospital and Department of Medical Sciences, University of Turin, Turin, Italy.
2. Department of Medical Sciences, University of Turin, Turin, Italy.
3. Division of Pathology, “Città Della Salute e Della Scienza” Hospital, Department of Medical Sciences, University of Turin, Turin, Italy.
4. Immunogenetic and Transplant Biology Center, “Città Della Salute e Della Scienza” Hospital and Department of Medical Sciences, University of Turin, Turin, Italy.