1. Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan.
2. Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
3. Division of Gene Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan.
4. Faculty of Medicine, Hiroshima University, Higashihiroshima, Japan.