Affiliation: | 1. Department of Otolaryngology, University of Manitoba, , Winnipeg, Manitoba, Canada;2. Department of Surgery, Division of Otolaryngology–Head and Neck Surgery, University of Alberta, , Edmonton, Alberta, Canada;3. Department of Emergency Medicine, University of Alberta, , Edmonton, Alberta, Canada;4. School of Public Health, University of Alberta, , Alberta, Canada;5. University College Cork, , Cork, Ireland |