1. Department of Anatomy, Medical School, Cheju National University, Cheju, Korea.
2. Department of Neurobiology, Medical School, Gyeougsang National University, Chinju, Korea.
3. Department of Biochemistry, Medical School, Cheju National University, Cheju, Korea.
4. Department of Pharmacology, Venterinary Medical School, Cheju National University, Cheju, Korea.