AUTHOR=Parrott Andrew C. TITLE=The Psychobiological Problems of Continued Nicotine Dependency in E-Cigarette ‘Vapers’. Commentary: “Electronic Cigarettes” JOURNAL=Frontiers in Psychiatry VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2015.00123 DOI=10.3389/fpsyt.2015.00123 ISSN=1664-0640