1. Natural Products Research Institute; Gyeonggi Institute of Science and Technology Promotion; 864-1 Ieui-dong, Yeoungtong-gu, Suwon-si Gyeonggi-do 443-766 Republic of Korea
2. College of Pharmacy; Dankook University; San#29, Anseo-dong, Dongnam-gu Cheonan-si 330-714 Republic of Korea