1. First Department of Surgery National and Kapodistrian University of Athens, Laikon General Hospital Athens Greece
2. Second Propedeutic Department of Surgery National and Kapodistrian University of Athens, Laikon General Hospital Athens Greece
3. First Department of Pathology National and Kapodistrian University of Athens Athens Greece
4. Department of HPB Surgery and Liver Transplant, Royal Free London London UK
5. Third Department of Surgery, National and Kapodistrian University of Athens Attikon University Hospital Athens Greece
6. Department of Surgery, Division of Surgical Oncology The Ohio State University Wexner Medical Center and James Cancer Hospital and Solove Research Institute Columbus Ohio USA
7. Hepatogastroenterology Unit, Second Department of Internal Medicine and Research Institute National and Kapodistrian University of Athens, Attikon University Hospital Athens Greece