1. Department of Otolaryngology, Base Hospital of the Federal District HBDF, Brasilia, DF, Brazil
2. Department of Pathology, Base Hospital of the Federal District HBDF, Brasilia, DF, Brazil
3. Department of Head and Neck, Base Hospital of the Federal District HBDF, Brasilia, DF, Brazil
4. Health Medical Science, University of Brasilia Post Graduation Program, Brasilia, DF, Brazil