1. The Facial Nerve Disorder Subcommittee, The Quality Control Committee of the Korean Otologic Society, Seoul, Korea.
2. Department of Otorhinolaryngology, Soonchunhyang University School of Medicine, Bucheon, Korea.
3. Department of Otorhinolaryngology, Sungkyunkwan University School of Medicine, Seoul, Korea.
4. Department of Otorhinolaryngology, The Catholic University of Korea School of Medicine, Seoul, Korea.
5. Soree Ear Clinic, Seoul, Korea.
6. Department of Neurology, Hallym University School of Medicine, Seoul, Korea.