1. Surgical Outcomes Research Centre (SOuRCe) and Institute of Academic Surgery at RPA; Sydney Local Health District and The University of Sydney; Sydney New South Wales Australia
2. Department of Colorectal Surgery; Royal Prince Alfred Hospital; Sydney New South Wales Australia
3. Discipline of Surgery; The University of Sydney; Sydney New South Wales Australia
4. Discipline of Anatomy and Histology; The University of Sydney; Sydney New South Wales Australia