1. Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada.
2. Department of Otolaryngology—Head and Neck Surgery, Jewish General Hospital, Montreal, Canada.
3. Department of Otolaryngology—Head and Neck Surgery, McGill University Health Centre, Montreal, Canada.
4. Faculty of Sciences, McGill University, Montreal, Canada.
5. Department of Pathology, Jewish General Hospital, Montreal, Canada.