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Forensic Science International|January 5, 2010
Can the prevalence of high blood drug concentrations in a population be estimated by analysing oral fluid? A study of tetrahydrocannabinol and amphetamineHallvard Gjerde, Alain VerstraeteTraffic Injury Prevention|February 10, 2023
Prevalence of alcohol and drugs among drivers killed in road traffic crashes in Norway during 2011-2020Hallvard Gjerde, Joachim FrostAccident; Analysis and Prevention|May 2, 2015
Prevalence of alcohol and drugs among motorcycle riders killed in road crashes in Norway during 2001-2010Asbjørg S Christophersen, Hallvard GjerdeTraffic Injury Prevention|March 16, 2021
Alcohol and drug use among road users involved in fatal crashes in NorwayLive Tanum Pasnin, Hallvard GjerdeForensic Science International|May 13, 2014
Which drugs are associated with highest risk for being arrested for driving under the influence? A case-control studyStig Tore Bogstrand, Hallvard GjerdeForensic Science International|July 22, 2011
Estimating equivalent cutoff thresholds for drugs in blood and oral fluid using prevalence regression: a study of tetrahydrocannabinol and amphetamineHallvard Gjerde, Alain G VerstraeteTraffic Injury Prevention|May 29, 2014
Prevalence of alcohol and drugs among car and van drivers killed in road accidents in Norway: an overview from 2001 to 2010Asbjørg S Christophersen, Hallvard GjerdeAnnals of Epidemiology|September 16, 2018
Challenges and common weaknesses in case-control studies on drug use and road traffic injury based on drug testing of biological samplesHallvard Gjerde, Giovanni Romeo, Jørg MørlandSubstance Use & Misuse|July 12, 2021
Prevalence and Correlates of Illicit Drug Use among Norwegian Nightlife PatronsBenedicte Jørgenrud, Håvard Furuhaugen, Hallvard GjerdeTraffic Injury Prevention|November 28, 2013
Commentary: why is the odds ratio for involvement in serious road traffic accident among drunk drivers in Norway and Finland higher than in other countries?Hallvard Gjerde, Stig Tore Bogstrand, Pirjo LillsundePageof 8