1. Division of Clinical Cell Therapy, United Centers for Advanced Research and Translational Medicine (ART); Tohoku University Graduate School of Medicine; 2-1 Seiryo-machi Aoba-ku, Sendai 980-8575 Japan
2. Department of Bioengineering and Robotics; Graduate School of Engineering, Tohoku University; 6-6-01 Aramaki Aoba-ku, Sendai 980-8579 Japan
3. Department of Ophthalmology; Tohoku University Graduate School of Medicine; 1-1 Seiryo-machi Aoba-ku, Sendai 980-8574 Japan
4. Division of Developmental Neuroscience; United Centers for Advanced Research and Translational Medicine (ART); Tohoku University Graduate School of Medicine; 2-1 Seiryo-machi Aoba-ku, Sendai 980-8575 Japan
5. R-tech Ueno Ltd.; 1-1-7, Uchisaiwai-cho Chiyoda-ku, Tokyo 100-0011 Japan