Affiliation: | 1. Department of Otolaryngology–Head and Neck Surgery, The Hospital for Sick Children, University of Toronto, Hamilton, Canada;2. Department of Medical Imaging, The Hospital for Sick Children, University of Toronto, Hamilton, Canada;3. Department of Otolaryngology–Head and Neck Surgery, University of Toronto, Toronto;4. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Canada |