1. Department of Colorectal Surgery, Liverpool Hospital Western Sydney University Sydney New South Wales Australia
2. Department of Anatomical Pathology, NSW Health Pathology Liverpool Hospital Sydney New South Wales Australia
3. School of Medicine Western Sydney University Penrith New South Wales Australia
4. South Western Sydney Clinical School Liverpool Hospital, University of New South Wales Sydney New South Wales Australia
5. Department of Colorectal Surgery, Macquarie University Hospital Macquarie University Sydney New South Wales Australia