1. Department of Radiology, Civil Hospital of Vimercate, Vimercate, Milan, Italy
2. Hepatology-Gastroenterology Unit, Internal Medicine Department, Civil Hospital of Sesto S. Giovanni, Milan, Italy
3. Department of Internal Medicine, San Biagio Hospital, Clusone, Bergamo, Italy
4. Department of Experimental Medicine and Pathology, University of Rome “La Sapienza”, Rome, Italy
5. Foundation for Research into the Biological Therapies of Cancer, Civil Hospital of Sesto S. Giovanni, Milan, Italy