title: Is there a causal linkage between cannabis use and increased risks of psychotic symptoms?
authors.affiliation: Christchurch Health and Development Study, University of Otago, Christchurch School of Medicine and Health Sciences, Christchurch, New Zealand. dm.fergusson@otago.ac.nz
authors.forename: David M
authors.initials: DM
authors.lastname: Fergusson
mesh_terms: D015984:Causality; D006801:Humans; D008385:Marijuana Smoking / Q000453:epidemiology*; D011605:Psychoses, Substance-Induced / Q000453:epidemiology*; D012307:Risk Factors