We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleTests of causal linkages between cannabis use and psychotic symptoms.AuthorsFergusson DM; Horwood LJ; Ridder EMPublicationAddiction, 2005, Vol 100, Issue 3, p354ISSN0965-2140Publication typearticleDOI10.1111/j.1360-0443.2005.01001.x