Vishal Gupta1, Ernst Klar2, Anil Agarwal31Department of Surgical Gastroenterology, King George’s Medical University, Lucknow, UP, India. 2Department of Visceral, Thoracic and Transplantation Surgery, University of Rostock, Germany. 3Department of Surgical Gastroenterology & Liver Transplantation, G B Pant Institute of Medical Education and Research, New Delhi, India.