1. Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
2. Department of Radiology, Ilsan Paik Hospital, Inje University, School of Medicine, Goyang 411-706, Korea.
3. College of Pharmacy, Kangwon National University, Chuncheon 200-701, Korea.
4. Division of Bio-resources Technology, Kangwon National University, Chuncheon 200-701, Korea.