AUTHOR=Zhang Melvyn W. B. , Ho Roger C. M. TITLE=Controversies of the Effect of Ketamine on Cognition JOURNAL=Frontiers in Psychiatry VOLUME=7 YEAR=2016 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2016.00047 DOI=10.3389/fpsyt.2016.00047 ISSN=1664-0640