Does variation in trait schizotypy and frequency of cannabis use influence the acute subjective, cognitive and psychotomimetic effects of delta-9-tetrahydrocannabinol? A mega-analysis. - Freeman AM; Mokrysz C; Hindocha C; Lawn W; Morgan CJ; Freeman TP; Saunders R; Curran HV (Journal of psychopharmacology (Oxford, England), 2021)