1. Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seoungbuk-gu, Seoul 02792, Republic of Korea
2. Division of Bio-Medical Science & Technology, University of Science and Technology, 113 Gwahangno, Yuseong-gu, Daejeon 305−333, Republic of Korea
3. School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea