AUTHOR=Tenovuo Olli , Janigro Damir , Sanchez Jean-Charles , Undén Johan TITLE=Editorial: Biomarkers of Brain Damage – A Complex Challenge With Great Potential JOURNAL=Frontiers in Neurology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2021.664445 DOI=10.3389/fneur.2021.664445 ISSN=1664-2295