1. Department of Electrical Engineering and Information Systems, Graduate School of Engineering, the University of Tokyo, Tokyo 113-8656, Japan
2. Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan
3. School of Life Science and Technology, Tokyo Institute of Technology, Yokohama 226-8501, Japan
4. iMed Japan Inc, Chiba 275-0001, Japan
5. Department of Chemical Biology, Tokyo Medical University, Tokyo 160-0023, Japan
6. Matrix Cell Research Institute Inc., Ibaraki 300-1232, Japan