Affiliation: | a Department of Chemical and Biological Engineering, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 136-713, Republic of Korea;b Institut Pasteur Korea, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea;c Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea |