1 Liver Transplant Unit, General Surgery 2U, Azienda Ospedaliera Universitaria Città Della Salute e Della Scienza di Torino, University of Turin, Turin, Italy.
2 Department of Hepatobiliary and General Surgery, Humanitas Clinical and Research Center, Istituto di Ricovero e Cura a Carattere Scientifico, Milan, Italy.
3 Department of Clinical and Surgical Sciences, University of Pavia, Pavia, Italy.