1. Department of Life and Nanopharmaceutical Sciences, Graduate School; Kyung Hee University; 26, Kyungheedae-ro, Dongdaemun-gu Seoul 02447 Korea
2. Department of Herbal Pharmacology, College of Korean Medicine; Kyung Hee University; 26, Kyungheedae-ro, Dongdaemun-gu Seoul 02447 Korea
3. International Ginseng and Herb Research Institute; Geumsan 32724 Korea
4. Department of Oriental Pharmaceutical Science, College of Pharmacy; Kyung Hee University; 26, Kyungheedae-ro, Dongdaemun-gu Seoul 02447 Korea