1 2nd Department of Propaedeutic Surgery, National and Kapodistrian University of Athens, Medical School, Athens, Greece.
2 Department of Surgery, Division of HPB Surgery, Liver & Transplant Unit, Hospital Italiano de Buenos Aires, Argentina.
3 HPB Surgical Unit, Royal Surrey County Hospital NHS Foundation Trust, Guildford, Surrey, UK.
4 Surrey Cancer Research Institute, Department of Clinical and Experimental Medicine, Faculty of Health and Medical Sciences, The Leggett Building, University of Surrey, Guildford, UK.