1. School of Nano-Bioscience and
Chemical Engineering, Ulsan National Institute of Science and Technology, Banyeon-ri 100, Ulsan, 689-798, Republic
of Korea
2. Biomechanics Laboratory, Nagoya Institute of Technology, Gokiso-cho, Showa-ku,
Nagoya, 466-8555, Japan
3. Dept Biomedical Engineering and Macromolecular Science & Engineering Program, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109-2099, United States