Pediatric liver transplantation, Auxiliary liver transplant, Complex hepatobiliary Surgeries including vascular resection and reconstruction, Liver cancer Surgery including complex liver resection, Surgery for gallbladder and pancreatic cancers, Management of Gastrointestinal Cancers including esophageal, gastric, colorectal cancers, Surgery for Portal hypertension including portosystemic shunt surgeries, Surgery and management of chronic pancreatitis, Early and late management of bile duct injuries and reconstructive biliary surgeries, Minimal Access and robotic hepatobiliary surgeries