[1
]ISNI 0000 0001 1507 4692, GRID grid.263518.b, Department of Otorhinolaryngology, , Shinshu University School of Medicine, ; 3-1-1 Asahi, Matsumoto, Nagano 390-8621 Japan
[2
]ISNI 0000 0001 1507 4692, GRID grid.263518.b, Department of Hearing Implant Sciences, , Shinshu University School of Medicine, ; 3-1-1 Asahi, Matsumoto, Nagano 390-8621 Japan
[3
]ISNI 0000 0004 1774 9165, GRID grid.417058.f, Department of Otolaryngology, , Tohoku Rosai Hospital, ; 4-3-21 Dainohara, Aoba-ku, Sendai, Miyagi 981-8563 Japan
[4
]ISNI 0000 0001 1017 9540, GRID grid.411582.b, Department of Otolaryngology, , Fukushima Medical University, ; 1 Hikariga-oka, Fukushima, Fukushima 960-1295 Japan
[5
]ISNI 0000 0004 1771 6769, GRID grid.415958.4, Department of Otorhinolaryngology, , International University of Health and Welfare, Mita Hospital, ; 1-4-3 Mita, Minato-ku, Tokyo 108-8329 Japan
[6
]ISNI 0000 0000 9368 0105, GRID grid.414173.4, Department of Pediatric Rehabilitation, , Hiroshima Prefectural Hospital, ; 1-5-54 Ujina-Kanda, Minami, Hiroshima 734-8530 Japan
[7
]ISNI 0000 0001 2242 4849, GRID grid.177174.3, Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medical
Sciences, , Kyushu University, ; 3-1-1, Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582 Japan
[8
]ISNI 0000 0004 0373 3971, GRID grid.136593.b, Department of Otorhinolaryngology-Head and Neck Surgery, Graduate School of Medicine,
, Osaka University, ; 2-2 Yamadaoka, Suita, Osaka 565-0871 Japan
[9
]ISNI 0000 0001 1033 6139, GRID grid.268441.d, Department of Otorhinolaryngology, Head and Neck Surgery, , Yokohama City University School of Medicine, ; 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004 Japan
[10
]ISNI 0000 0004 0467 212X, GRID grid.413045.7, Department of Otorhinolaryngology, , Yokohama City University Medical Center, ; 4-57 Urafune, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
[11
]ISNI 0000 0004 1764 6940, GRID grid.410813.f, Department of Otorhinolaryngology, , Toranomon Hospital, ; 1-2-3 Toranomon, Minato-ku, Tokyo 105-0001 Japan
[12
]ISNI 0000 0001 0661 2073, GRID grid.411898.d, Department of Otorhinolaryngology, , Jikei University School of Medicine, ; 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461 Japan
[13
]ISNI 0000 0001 0667 4960, GRID grid.272458.e, Department of Otorhinolaryngology-Head and Neck Surgery, , Kyoto Prefectural University of Medicine, ; Kawaramachi-Hirokoji, Kajii-cho, Kamigyo-ku, Kyoto, Kyoto, 602-8566 Japan
[14
]ISNI 0000 0000 8711 3200, GRID grid.257022.0, Department of Otorhinolaryngology, Head and Neck Surgery, Graduate School of Biomedical
and Health Sciences, , Hiroshima University, ; 1-2-3 Kasumi, Minami-ku, Hiroshima, Hiroshima, 734-8553 Japan
[15
]ISNI 0000 0001 1092 3077, GRID grid.31432.37, Department of Otorhinolaryngology, Head and Neck Surgery, , Kobe University School of Medicine, ; 7-5-1 Kusunoki-machi, Chuou-ku, Kobe 650-0017 Japan
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