[1
]
Department of Otolaryngology, Hospital de Base do Distrito Federal, State Department
of Health of the Federal District, Brasília, DF, Brazil helgak1@hotmail.com.
[2
]
Department of Otolaryngology, Universidade de Brasília, Brasília, DF, Brazil.
[3
]
Department of Otolaryngology, Hospital de Base do Distrito Federal, State Department
of Health of the Federal District, Brasília, DF, Brazil.