We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleCannabis use and earlier onset of psychosis: a systematic meta-analysis.AuthorsLarge, Matthew; Sharma, Swapnil; Compton, Michael T; Slade, Tim; Nielssen, OlavAbstractA number of studies have found that the use of cannabis and other psychoactive substances is associated with an earlier onset of psychotic illness.PublicationArchives of general psychiatry, 2011, Vol 68, Issue 6, p555ISSN1538-3636Publication typeJournal ArticleDOI10.1001/archgenpsychiatry.2011.5