AUTHOR=Lucas Kurt, Fröhlich-Nowoisky Janine, Oppitz Nicole, Ackermann Maximilian TITLE=Cinnamon and Hop Extracts as Potential Immunomodulators for Severe COVID-19 Cases JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/articles/10.3389/fpls.2021.589783 DOI=10.3389/fpls.2021.589783 ISSN=1664-462X