AUTHOR=Correale Jorge , Rush Carolina A. , Barboza Andrés TITLE=Are highly active and aggressive multiple sclerosis the same entity? JOURNAL=Frontiers in Neurology VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2023.1132170 DOI=10.3389/fneur.2023.1132170 ISSN=1664-2295