1. Department of Radiology, Abdominal Imaging Division, University of Pittsburgh, 200 Lothrop St, Pittsburgh, PA 15213.
2. Department of Biopathology and Medical Biotechnologies, Section of Radiology, University Hospital “Paolo Giaccone,” Palermo, Italy.
3. Department of Pathology, Division of Transplant Pathology, University of Pittsburgh, Pittsburgh, PA.
4. Department of Surgery, Division of Hepatobiliary & Pancreatic Surgery, University of Pittsburgh, Pittsburgh, PA.