title: Impairment due to cannabis and ethanol: clinical signs and additive effects.
authors.affiliation: Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway. j.g.bramness@medisin.uio.no
authors.forename: Jørgen G
authors.initials: JG
authors.lastname: Bramness
authors.forename: Hassan Zaré
authors.initials: HZ
authors.lastname: Khiabani
authors.forename: Jørg
authors.initials: J
authors.lastname: Mørland