. Author manuscript; available in PMC: 2022 Jan 4.
Published in final edited form as: Cytotherapy. 2015 May;17(5):621–632. doi: 10.1016/j.jcyt.2015.03.611
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).