Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDoes cannabis onset trigger cocaine onset? A case-crossover approach.AuthorsO'Brien, Megan S.; Comment, Leah Andrews; Liang, Kung Yee; Anthony, James C.PublicationInternational Journal of Methods in Psychiatric Research, 2012, Vol 21, Issue 1, p66ISSN1049-8931Publication typeArticleDOI10.1002/mpr.359