1Yong Loo Lin School of Medicine, National University of Singapore, Singapore
2Singapore Polyposis Registry, Department of Colorectal Surgery, Singapore General Hospital, Singapore
3Capstone Colorectal Surgery Centre; Fortis Surgical Hospital; Colorectal Surgical Oncology and Cancer Genetics Service (FSH); Institute of Bioengineering and Nanotechnology, A Star; Fortis-IBN Tissue Bank, Singapore
4Colorectal Cancer Research Laboratory, Department of Colorectal Surgery, Saw Swee Hock School of Public Health, National University of Singapore; Duke-NUS Graduate Medical School, National University of Singapore, Singapore
5Department of Dermatology, Singapore General Hospital, Singapore
6Department of Colorectal Surgery, Singapore General Hospital, Singapore
7Division of Medical Oncology, National Cancer Centre Singapore, Singapore
8Division of Colorectal Surgery, Singapore General Hospital, Singapore