• Norwegian roadside survey of alcohol and drug use by drivers (2008-2009) 

      Gjerde, Hallvard; Christophersen, Asbjørg S; Normann, Per Trygve; Assum, Terje; Øiestad, Elisabeth Leere; Mørland, Jørg (Journal article; Peer reviewed, 2012-09-25)
      Objective: To examine alcohol and drug use among random drivers in different regions of Norway by analyzing oral fluid, compare drivers in urban and rural areas, compare with results from the roadside survey in southeastern ...