1. Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan;
2. Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan;
3. Division of Stem Cell Therapy, Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, University of Tokyo, Tokyo, Japan;
4. Department of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan;
5. Department of Molecular Laboratory Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan;
6. Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan;
7. Laboratory of Functional Genomics, Department of Medical Genome Sciences, Graduate School of Frontier Sciences, University of Tokyo, Tokyo, Japan;
8. Department of Biological Sciences, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan;
9. Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA;
10. Cancer Science Institute, National University of Singapore, Singapore, Singapore;
11. International Research Center for Medical Sciences, Kumamoto University, Kumamoto City, Japan; and
12. Cellular Memory Laboratory, RIKEN, Wako, Japan