1. Department of Pharmacology, College of Oriental Medicine, Kyung Hee University, 1 Hoigi-Dong, Dongdaemun-gu, Seoul 130–701, South Korea
2. Department of Oriental Pharmacy, College of Pharmacy, VCRC of Wonkwang University, Iksan, Jeonbuk 570–749, South Korea
3. College of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk 570–749, South Korea