1. Department of Endocrinology and Metabolism, Section of Metabolic Diseases and Diabetes, Pisa University Hospital, Pisa, Italy
2. Division of General and Transplant Surgery, Pisa University Hospital, Pisa, Italy
3. Department of Experimental Pathology, Medical Biotechnology, Infectious Diseases and Epidemiology, Pisa University Hospital, Pisa, Italy
4. Department of Liver Transplantation, Hepatology, and Infectious Diseases, Division of General Surgery and Liver Transplantation, Pisa University Hospital, Pisa, Italy
5. Department of Medical Area, Section of Metabolic Diseases and Diabetes, Pisa University Hospital, Pisa, Italy