1 Department of General Surgery, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia; Department of Hepatobiliary and Pancreatic Surgery, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia; Faculty of Medicine, University of Queensland, Saint Lucia, Queensland, Australia.
2 Department of Anatomical Pathology, NSW Health Pathology, Royal North Shore Hospital, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.