1. Division of Surgical OncologyNational Cancer Centre Singapore Singapore
2. SingHealth Duke‐NUS Head and Neck CentreSingapore General Hospital Singapore
3. Duke‐NUS Medical School Singapore
4. Clinical and Research Database Registry, Surgery Academic Clinical Program (ACP), Singapore General Hospital Singapore
5. Division of Radiation OncologyNational Cancer Centre Singapore Singapore
6. Department of General SurgerySingapore General Hospital Singapore