1. Department of Physiology, College of Liberal Arts, University of Minnesota, Minneapolis, Minnesota.
2. Department of Pharmacology and Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
3. Department of Otorhinolaryngology-Head and Neck Surgery, Ilsong Memorial Institute of Head and Neck Cancer, Hallym University College of Medicine, Seoul, Republic of Korea.