title: Cannabis and psychosis.
authors.forename: John
authors.initials: J
authors.lastname: Macleod
authors.forename: George
authors.initials: G
authors.lastname: Davey Smith
authors.forename: Matthew
authors.initials: M
authors.lastname: Hickman
authors.forename: Matthias
authors.initials: M
authors.lastname: Egger
mesh_terms: D000293:Adolescent; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D008385:Marijuana Smoking / Q000009:adverse effects*; D011605:Psychoses, Substance-Induced / Q000209:etiology*