[1
]
Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College
of Medicine, Seoul, Republic of Korea; Department of Medical service, Second brigade,
Republic of Korea Air Force, Republic of Korea.
[2
]
Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College
of Medicine, Seoul, Republic of Korea.
[3
]
Medical Science Research Center, Korea University College of Medicine, Seoul, Republic
of Korea.
[4
]
Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College
of Medicine, Seoul, Republic of Korea. Electronic address: mednlaw@korea.ac.kr.