AUTHOR=Akoumianaki Evangelia , Vaporidi Katerina , Bolaki Maria , Georgopoulos Dimitris TITLE=Happy or Silent Hypoxia in COVID-19–A Misnomer Born in the Pandemic Era JOURNAL=Frontiers in Physiology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2021.745634 DOI=10.3389/fphys.2021.745634 ISSN=1664-042X