AUTHOR=Beltrami Antonio P. , Spinetti Gaia TITLE=Editorial: Mechanisms and Implications of the Aging of Cardiovascular Regenerative Cells JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=5 YEAR=2018 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2018.00093 DOI=10.3389/fcvm.2018.00093 ISSN=2297-055X