Department of Clinical Surgery, Hospital Pequeno Príncipe, Curitiba, Brasil;
Department of Anesthesiology, Hospital de Clínicas da UFPR and Hospital Pequeno Príncipe, Curitiba, Brasil;
Department of ENT Surgery, Hospital Pequeno Príncipe, Curitiba, Brasil;
Department of Otorhinolaryngology, Hospital Pequeno Príncipe, Curitiba, Brasil;
Department of Clinical Surgery, Hospital de Clínicas da UFPR, Curitiba, Brasil;