1 Department of Surgical Oncology, Sultan Qaboos Comprehensive Cancer Care and Research Centre, Muscat, Sultanate of Oman.
2 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Muscat, Sultanate of Oman.
3 Department of Surgery/Division of HBP Surgery and Transplantation, St. Eloi Hospital, Montpellier University Hospital-School of Medicine, Montpellier, France.