1. Center for iPS Cell Research and Application (CiRA), Institute for Integrated Cell-Material Sciences, Kyoto University, Kyoto 606-8507, Japan.
2. Department of Stem Cell Biology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan.
3. Core Research for Evolutional Science and Technology and Yamanaka iPS Cell Project, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan.
4. Gladstone Institute of Cardiovascular Disease, San Francisco, CA 94158, USA.