1. Department of Biological Repair, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
2. Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
3. Department of Neurosurgery, Clinical Neuroscience, Kyoto University Graduate School of Medicine, Kyoto, Japan
4. Functional Probe Research Laboratory, RIKEN Center for Molecular Imaging Science, Kobe, Japan
5. Department of Neurology, Kitano Hospital, Osaka, Japan