[1
]
Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine,
Chiba University, Chiba, Japan; Chiba Rosai Hospital, Chiba, Japan. Electronic address:
mnmk1989@gmail.com.
[2
]
Chiba Rosai Hospital, Chiba, Japan.
[3
]
Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine,
Chiba University, Chiba, Japan.
[4
]
Wakaba ENT Clinic, Chiba, Japan.
[5
]
Makuhari Baypark Clinic, Chiba, Japan.
[6
]
Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine,
Yamanashi University, Yamanashi, Japan.