1 Department of Otolaryngology-Head and Neck Surgery, McGill University Health Centre, 1001 Decarie Boulevard, H4A 3J1, Montreal, Quebec H4A 3J1, Canada. Electronic address: kmkost@yahoo.com.
2 Department of Otolaryngology-Head & Neck Surgery, University of Mississippi, 2500 N State Street, Jackson, MS 39216 USA. Electronic address: gjefferson@umc.edu.