Bjørnestad, Endre Dahlen and Vederhus, John-Kåre and Clausen, Thomas (2024) Change in substance use among patients in opioid maintenance treatment: baseline to 1-year follow-up. Harm Reduction Journal , 21 , (1) .

Hamina, Aleksi and Odsbu, Ingvild and Borchgrevink, Petter Christian and Chen, Li-Chia and Clausen, Thomas and Espnes, Ketil Arne and Gjesdal, Kine and Handal, Marte and Hartikainen, Sirpa and Hjellvik, Vidar and Holter, Marianne Therese Smogeli and Høibø, Trond and Kurita, Geana Paula and Langaas, Harald Christian and Lid, Torgeir Gilje and Nøst, Torunn Hatlen and Sjøgren, Per and Skurtveit, Svetlana (2022) Cohort description: preventing an opioid epidemic in Norway - focusing on treatment of chronic pain (POINT) - a national registry-based study. Clinical Epidemiology , 14 , pp. 1477-1486.

Welle-Strand, Gabrielle K and Skurtveit, Svetlana and Clausen, Thomas and Sundal, Christine and Gjersing, Linn (2020) COVID-19 survey among people who use drugs in three cities in Norway. Drug and Alcohol Dependence , 217 , p. 108302.

Eide, Desiree and Bjørnestad, Ronny and De Pirro, Silvana and Ellefsen, Rune and Gaulen, Zhanna and Kokabzadeh Haukland, Vegard and Samant Lassemo, Eva Irene and Leonhardt, Marja and Melis, Francesca and Midtsundstad, Lene and Myklebust, Lars and Oldervoll, Ann and Støme, Linn and Thylstrup, Birgitte and Tjagvad, Christian and Couëssurel Wüsthof, Linda Elise and Clausen, Thomas (2026) Evaluation of heroin-assisted treatment in Norway. Oslo: Norwegian Centre for Addiction Research.

Hamina, Aleksi and Odsbu, Ingvild and Hjellvik, Vidar and Lid, Torgeir G and Clausen, Thomas and Skurtveit, Svetlana (2024) Fatal drug overdoses in individuals treated pharmacologically for chronic pain: a nationwide register-based study. British Journal of Anaesthesia , 132 , (1) , pp. 86-95.

Comiskey, Catherine and Bergeron, Henri and Clausen, Thomas and Colman, Charlotte and Ferrer-Wreder, Laura and Fischer, Gabriele and de Matos, Margarida Gaspar and Ivers, Jo-Hanna and Jauffret-Roustide, Marie and Liem, Marieke and Lintonen, Tomi and Moeller, Kim and Ojanperä, Ilkka and de Fonseca, Fernando Rodríguez and Mèlich, Marta Torrens (2024) The importance of co-produced, multi-method, independent scientific evidence in times of alternative truths and global policy debates. International Journal of Drug Policy , 129 .

Skurtveit, Svetlana and Odsbu, Ingvild and Gjersing, Linn and Handal, Marte and Lid, Torgeir Gilje and Clausen, Thomas and Hamina, Aleksi (2022) Individuals dying of overdoses related to pharmaceutical opioids differ from individuals dying of overdoses related to other substances: a population-based register study. European Addiction Research , 28 , (6) , pp. 419-424.

Bech, Anne Berit and Clausen, Thomas and Waal, Helge and Delaveris, Gerd Jorunn Møller and Skeie, Ivar (2022) Organ pathologies detected post-mortem in patients receiving opioid agonist treatment for opioid use disorder: a nation-wide 2-year cross-sectional study. Addiction , 17 , (4) , pp. 977-985.

Eide, Desiree and McDonald, Rebecca and Hamina, Aleksi and Clausen, Thomas and Odsbu, Ingvild and Skurtveit, Svetlana (2023) Prescription high-risk polysubstance use among opioid maintenance treatment patients. International Journal of Drug Policy .

McDonald, Rebecca and Eide, Desiree and Abel-Ollo, Katri and Barnsdale, Lee and Carter, Ben and Clausen, Thomas and Day, Ed and Fonseca, Francina and Holmén, Elin and Horsburgh, Kirsten and Kelleher, Mike and Kåberg, Martin and Ladenhauf, Martin and McAuley, Andrew and Metrebian, Nicola and Neale, Joanne and Parkin, Stephen and Ratcliffe, Kevin and Rintoul, Chris and Smith, Josie and Stifanoviciute, Viktorija and Torrens, Marta and Thiesen, Henrik and Strang, John (2022) A rapid assessment of take-home naloxone provision during COVID-19 in Europe. International Journal of Drug Policy , 107 , (103787) . (In Press)

Eide, Desiree and Lobmaier, Philipp and Clausen, Thomas (2022) Who is using take-home naloxone? An examination of supersavers. Harm Reduction Journal , 19 , (1) , p. 65.