1. Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 2–11–16 Yayoi, Bunkyo-ku, Tokyo 113–8656, Japan
2. Institute of Industrial Science, The University of Tokyo, 4–6–1 Komaba, Meguro-ku, Tokyo 153–8904, Japan
3. Department of Veterinary Surgery, Graduate School of Agriculture and Life Science, The University of Tokyo, 1–1–1 Yayoi, Bunkyo-ku, Tokyo 113–8657, Japan
4. NEXT21 K.K., 3–38–1 Hongo, Bunkyo-ku, Tokyo 113–0033, Japan