1. Department of Internal Medicine, Pusan National University School of Medicine, Yangsan, Korea.
2. Medical Research Institute, Pusan National University School of Medicine, Yangsan, Korea.
3. Department of Otorhinolaryngology, Pusan National University School of Medicine, Yangsan, Korea.
4. Department of Pathology, Pusan National University School of Medicine, Yangsan, Korea.
5. Department of Life Science, POSTECH, Pohang, Korea.
6. Department of Physiology, Pusan National University School of Medicine, Yangsan, Korea.