1. Department of Colorectal Surgery; Concord Hospital; Sydney New South Wales Australia
2. Discipline of Surgery; Sydney Medical School; University of Sydney; Sydney New South Wales Australia
3. Departments of Colorectal Surgery and Surgery; Liverpool Hospital; Sydney New South Wales Australia
4. School of Medicine; Western Sydney University; Sydney New South Wales Australia
5. Division of Anatomical Pathology; Concord Hospital; Sydney New South Wales Australia
6. Discipline of Pathology; Sydney Medical School; University of Sydney; Sydney New South Wales Australia