1 Department of Otohinolaryngology, H & N Surgery, School of Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemun-gu, Seoul, 130-702, Korea.
2 Department of Anatomy, School of Medicine, Kyung Hee University, Seoul, Korea.
3 Department of Biochemistry and Molecular Biology, Medical Science and Engineering Research Center for Bioreaction to Reactive Oxygen Species, BK-21, School of Medicine, Kyung Hee University, Seoul, 130-701, Korea.
4 Department of Otohinolaryngology, H & N Surgery, School of Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemun-gu, Seoul, 130-702, Korea. [email protected].