Department of Otolaryngology - Head & Neck Surgery, Schulich Medicine & Dentistry, Western University, London Health Sciences Centre, St. Joseph's Hospital, London, Ontario, Canada. leigh.sowerby@sjhc.london.on.ca. Department of Otolaryngology - Head & Neck Surgery, Schulich Medicine & Dentistry, Western University, London Health Sciences Centre, St. Joseph's Hospital, London, Ontario, Canada. Department of Medicine, Western University, London, ON, Canada. Division of Otolaryngology - Department of Surgery, McMaster University, Hamilton, ON, Canada.