1. Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
2. Department of Biostatistics, University Health Network, Toronto, Ontario, Canada3Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Ontario, Canada
3. Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Ontario, Canada4Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
4. Department of Otolaryngology–Head and Neck Surgery, Princess Margaret Cancer Centre–University Health Network, University of Toronto, Toronto, Ontario, Canada
5. Department of Radiation Oncology, Princess Margaret Cancer Centre–University Health Network, University of Toronto, Toronto, Ontario, Canada