1. Department
of Chemical and Biochemical Engineering, Dongguk University-Seoul, 3-26 Pil-Dong, Chung-gu, Seoul 100-715, Korea
2. Biomaterials
Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
3. Korea University of Science and Technology, 113 Gwahangno, Yuseong-gu, Daejeon 305-333, Korea
4. KU-KIST
Graduate School of Converging Science and Technology, Korea University, Seoul 136-701, Korea