1. Department of Radiation Oncology, Head and Neck Oncology Program Dana‐Farber Cancer Institute/Brigham & Women's Hospital, Harvard Medical School Boston Massachusetts USA
2. Department of Epidemiology and Biostatistics Memorial Sloan Kettering Cancer Center New York New York USA
3. Sydney Head and Neck Cancer Institute, Department of Head and Neck Surgery Chris O'Brien Lifehouse Camperdown New South Wales Australia
4. School of Public Health, Faculty of Medicine and Health The University of Sydney New South Wales Australia
5. Primary Care Collaborative Cancer Clinical Trials Group (PC4) Centre for Cancer Research Melbourne Victoria Australia
6. Department of General Practice University of Melbourne Melbourne Victoria Australia
7. Department of Cancer Imaging, Peter MacCallum Cancer Centre Melbourne VIC Australia
8. Central Clinical School Monash University Melbourne Victoria Australia
9. Department of Medicine Brigham and Women's Hospital, Harvard Medical School Boston Massachusetts USA