1. Institute of Advanced Biomedical Engineering and Science Tokyo Women's Medical University TWIns, 8‐1 Kawadacho, Shinjuku‐ku, Tokyo, 162‐8666 Japan
2. Department of Materials Science and Technology, Faculty of Industrial Science and Technology Tokyo University of Science 6‐3‐1, Niijuku, Katsushika‐ku, Tokyo, 125‐8585 Japan
3. Department of Materials and Applied Chemistry College of Science and Technology, Nihon University 1‐8‐14 Kanda Surugadai, Chiyoda‐ku, Tokyo, 101‐8308 Japan
4. Cell Sheet Tissue Engineering Center and Department of Pharmaceutics and Pharmaceutical Chemistry University of Utah 30 South 2000 East, Salt Lake City Utah, 84112