Institution: | aDepartment of Otorhinolaryngology, Yamato Takada Municipal Hospital, 1-1 Isonokita, Yamatotakada, Nara 635-8501, Japan;bDepartment of Otorhinolaryngology, Nara Medical University, 840 Shijocho, Kashihara, Nara 634-8522, Japan;cDepartment of Surgery, Yamato Takada Municipal Hospital, 1-1 Isonokita, Yamatotakada, Nara 635-8501, Japan |