The contribution of cannabis use to variation in the incidence of psychotic disorder across Europe (EU-GEI) : a multicentre case-control study Marta Di Forti, Diego Quattrone, Tom P Freeman, Giada … Lire la suite de The contribution of cannabis use to variation in the incidence of psychotic disorder across Europe (EU-GEI) : a multicentre case-control study , Marta Di Forti et al., The Lancet, 2019