Citation: Weinberger AH, Pacek LR, Wall MM, Zvolensky MJ, Copeland J, Galea S, Nahvi S, Moeller SJ, Hasin DS, Goodwin RD. Trends in cannabis use disorder by cigarette smoking status in the United States, 2002-2016. Drug Alcohol Depend. 2018 Oct 1;191:45-51. doi: 10.1016/j.drugalcdep.2018.06.016. Epub 2018 Jul 20.