AUTHOR=Spitzer Ernest , Mylotte Darren , Lauten Alexander , O'Sullivan Crochan J. TITLE=Editorial: TAVI and the Challenges Ahead JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=7 YEAR=2020 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2020.00149 DOI=10.3389/fcvm.2020.00149 ISSN=2297-055X