AUTHOR=Grundy John G., Anderson John A. E. TITLE=Commentary: The Relationship of Bilingualism Compared to Monolingualism to the Risk of Cognitive Decline or Dementia: A Systematic Review and Meta-Analysis JOURNAL=Frontiers in Aging Neuroscience VOLUME=9 YEAR=2017 URL=https://www.frontiersin.org/articles/10.3389/fnagi.2017.00344 DOI=10.3389/fnagi.2017.00344 ISSN=1663-4365