Tsunakuni Ikka1, Misao Fujita2, Yoshimi Yashiro3, Hiroshi Ikegaya4. 1. Department of Clinical Research Support, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8551, Japan. Electronic address: ikka@ncnp.go.jp. 2. Uehiro Research Division for iPS Cell Ethics, Center for iPS Cell Research and Application (CiRA), Kyoto University, Sakyo-ku, Kyoto 606-8507, Japan. 3. Uehiro Research Division for iPS Cell Ethics, Center for iPS Cell Research and Application (CiRA), Kyoto University, Sakyo-ku, Kyoto 606-8507, Japan. Electronic address: yashiro.yoshimi@cira.kyoto-u.ac.jp. 4. Department of Forensic Medicine, Faculty of Medicine, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan.