. 2020 Jul 21;15:70–76. doi: 10.1016/j.reth.2020.07.001
© 2020 The Japanese Society for Regenerative Medicine. Production and hosting by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).