1. College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk, 361-951, Korea
2. College of Pharmacy, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Korea