1. Department of Otorhinolaryngology–Head and Neck Surgery, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan
2. Department of Otorhinolaryngology, Ikeda City Hospital, Ikeda City, Osaka, Japan
3. Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan
4. Department of Pathology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan