1. Research Institute of Pharmaceutical Sciences,
College of Pharmacy, Seoul National University, Seoul 151-742, South Korea
2. College of Pharmacy, Chosun University, 309
Pilmun-daero, Dong-gu, Gwangju 501-759, South Korea
3. Department
of Molecular Medicine and Biopharmaceutical Sciences, Graduate School
of Convergence Science and Technology, Seoul National University, Seoul 151-742, South Korea