1. Division of Biotechnology, School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
2. Research Institute, National Cancer Center, Goyang-si 410-769, Republic of Korea
3. Department of Integrated Biomedical and Life Science, College of Health Science, Korea University, Seoul 136-703, Republic of Korea
4. Department of Biomedical Laboratory Science, College of Health Science, Cheongju University, Cheongju-si 360-764, Republic of Korea