Trends in Daily Cannabis Use Among Cigarette Smokers: United States, 2002-2014.
Goodwin RD, Pacek LR, Copeland J, Moeller SJ, Dierker L, Weinberger A, Gbedemah M, Zvolensky MJ, Wall MM, Hasin DS. Trends in Daily Cannabis Use Among Cigarette Smokers: United States, 2002-2014. Am J Public Health. 2018 01; 108(1):137-142.