1. WPI-Advanced Institute for Materials Research (WPI-AIMR); Tohoku University; 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
2. Department of Life Science and Medical Bioscience; School of Advanced Science and Engineering; Waseda University; TWIns, 2-2 Wakamatsu-cho Shinjuku-ku Tokyo 162-8480 Japan
3. Department of Bioengineering and Robotics; Graduate School of Engineering; Tohoku University; 6-6-01 Aramaki Aoba-ku Sendai 980-8579 Japan
4. College of Animal Bioscience and Technology; Department of Bioindustrial Technologies; Konkuk University; Hwayang-dong Kwangjin-gu Seoul 143-701 Republic of Korea
5. Division of Clinical Cell Therapy; United Centers for Advanced Research and Translational Medicine (ART); Tohoku University Graduate School of Medicine; 2-1 Seiryo Aoba-ku Sendai 980-8575 Japan
6. Center for Biomedical Engineering; Department of Medicine; Brigham and Women's Hospital; Harvard Medical School; Harvard-MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology; Wyss Institute for Biologically Inspired Engineering; Harvard University; PRB-252, 65 Landsdowne Street Cambridge MA 02139 USA