1. Yong Loo Lin School of Medicine, National University of Singapore , Singapore
2. Colorectal Service, Department of General Surgery, Division of Surgery, Sengkang General Hospital, SingHealth Services , Singapore
3. Cambridge Colorectal Unit, Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust , Cambridge, UK
4. Division of Colorectal Surgery, Department of Surgery, University Surgical Cluster, National University Hospital , Singapore