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Proton-pump inhibitors among adults: a nationwide drug-utilization study.
Hálfdánarson ÓÖ, Pottegård A, Björnsson ES, Lund SH, Ogmundsdottir MH, Steingrímsson E, Ogmundsdottir HM, Zoega H. Hálfdánarson ÓÖ, et al. Therap Adv Gastroenterol. 2018 May 30;11:1756284818777943. doi: 10.1177/1756284818777943. eCollection 2018. Therap Adv Gastroenterol. 2018. PMID: 29872455 Free PMC article.
Antipsychotic use in pregnancy and risk of attention/deficit-hyperactivity disorder and autism spectrum disorder: a Nordic cohort study.
Hálfdánarson Ó, Cohen JM, Karlstad Ø, Cesta CE, Bjørk MH, Håberg SE, Einarsdóttir K, Furu K, Gissler M, Hjellvik V, Kieler H, Leinonen MK, Nørgaard M, Öztürk Essen B, Ulrichsen SP, Reutfors J, Zoega H. Hálfdánarson Ó, et al. Evid Based Ment Health. 2022 May;25(2):54-62. doi: 10.1136/ebmental-2021-300311. Epub 2021 Nov 22. Evid Based Ment Health. 2022. PMID: 34810174 Free PMC article.
International trends in antipsychotic use: A study in 16 countries, 2005-2014.
Hálfdánarson Ó, Zoëga H, Aagaard L, Bernardo M, Brandt L, Fusté AC, Furu K, Garuoliené K, Hoffmann F, Huybrechts KF, Kalverdijk LJ, Kawakami K, Kieler H, Kinoshita T, Litchfield M, López SC, Machado-Alba JE, Machado-Duque ME, Mahesri M, Nishtala PS, Pearson SA, Reutfors J, Saastamoinen LK, Sato I, Schuiling-Veninga CCM, Shyu YC, Skurtveit S, Verdoux H, Wang LJ, Yahni CZ, Bachmann CJ. Hálfdánarson Ó, et al. Eur Neuropsychopharmacol. 2017 Oct;27(10):1064-1076. doi: 10.1016/j.euroneuro.2017.07.001. Epub 2017 Jul 27. Eur Neuropsychopharmacol. 2017. PMID: 28755801