1 University Surgical Cluster, National University Health System, Singapore, Singapore.
2 Division of Colorectal Surgery, Department of Surgery, National University Health System, 1E Kent Ridge Road, Singapore, 119228, Singapore.
3 Division of Colorectal Surgery, Department of Surgery, National University Health System, 1E Kent Ridge Road, Singapore, 119228, Singapore. [email protected].
4 National University of Singapore, Singapore, Singapore. [email protected].