AUTHOR=Bernardi Paolo TITLE=Looking Back to the Future of Mitochondrial Research JOURNAL=Frontiers in Physiology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2021.682467 DOI=10.3389/fphys.2021.682467 ISSN=1664-042X