1. Department of Clinical and Experimental Medicine, Division of Metabolism and Cell Transplantation, University of Pisa, Pisa, Italy
2. Division of Diagnostic and Interventional Ultrasound in Transplants, University Hospital of Pisa, Pisa, Italy
3. Department of Translational Research and New Technologies in Medicine and Surgery, Division of General and Transplant Surgery, University of Pisa, Pisa, Italy