1 Uehiro Research Division for iPS Cell Ethics, Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan.
2 Uehiro Research Division for iPS Cell Ethics, Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan; Institute for the Advanced Study of Human Biology (WPI-ASHBi), KUIAS Kyoto University, Kyoto 606-8501, Japan. Electronic address: misao-fujita@cira.kyoto-u.ac.jp.