1. GenoTech Corporation, 59-5 Jang-dong, Yuseong-gu, Daejeon 305-343, South Korea
2. Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, South Korea
3. Department of Life Science, Sogang University, Shinsu-dong, Mapo-gu, Seoul 121-742, South Korea