1. Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo, Japan
2. Research Center, Toyobo Company, Ltd., Otsu, Japan
3. Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
4. Biotechnology Research Laboratory, Toyobo Company, Ltd., Tsuruga, Japan
5. Faculty of Medical Science, Juntendo University, Chiba, Japan