Dr Sean Mackay is a Melbourne-based surgeon and researcher. His clinical interests are hepatobiliary, upper gastrointestinal, bariatric (weight loss), and advanced laparoscopic surgery; and ERCP and therapeutic endoscopy. His doctoral thesis was in the area of the objective assessment of technical skills in surgical trainees, and his main current research activity is with the Eastern Health Surgical Research Group (Eastern Health Clinical School, Monash University).