1. Department of General Surgery, Singapore General Hospital, S169856, Singapore
2. Division of Surgical Oncology, National Cancer Centre, S169610, Singapore
3. Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, S169857, Singapore
4. Singhealth Duke-NUS Head and Neck Centre, Singhealth, S169856, Singapore
5. Cancer Therapeutics Research Laboratory, National Cancer Centre, S169610, Singapore
6. Department of Anatomical Pathology, Singapore General Hospital, S169856, Singapore
7. Department of Medical Oncology, National Cancer Centre, S169610, Singapore