1. Department of Otolaryngology - Head and Neck Surgery; University of Toronto; Toronto Ontario Canada
2. Department of Otolaryngology - Head and Neck Surgery; Department of Surgical Oncology; Princess Margaret Cancer Centre; Toronto Ontario Canada
3. Department of Otolaryngology - Head and Neck Surgery; Queen's University; Kingston Ontario Canada
4. Cancer Care and Epidemiology Division; Queen's Cancer Research Institute; Queen's University; Kingston Ontario Canada
5. Department of Otolaryngology - Head and Neck Surgery; Mount Sinai Hospital; Toronto Ontario Canada
6. Division of General Surgery; Department of General Surgery and Surgical Oncology; University of Toronto; Toronto Ontario Canada