1. Department of Otolaryngology-Head and Neck Surgery, Schulich School of Medicine and Dentistry; Western University; London Ontario Canada
2. Cancer Care Ontario, Program in Evidence-based Care; McMaster University; Hamilton Ontario Canada
3. Department of Oncology, London Regional Cancer Center, Schulich School of Medicine and Dentistry; Western University; London Ontario Canada
4. Department of Otolaryngology-Head and Neck Surgery/Surgical Oncology, Wharton Head and Neck Program; University Health Network, Princess Margaret Hospital; Toronto Ontario Canada