1. Department of Liver and Multi-organ Transplantation, Sant 'Orsola-Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
2. Department of General Surgery and Transplantation, Sant 'Orsola-Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
3. Heart and Lung Transplantation Program, Department of Cardiac Surgery, Sant 'Orsola-Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy