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. 2023 Jun 7;13:9257. doi: 10.1038/s41598-023-33876-8

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Trough dabigatran (assessed by in-home diluted thrombin time), rivaroxaban and apixaban (assessed with anti-Xa assays) concentrations in patients on concomitant treatment with levetiracetam (black circles for patients with atrial fibrillation and grey circles for two patients with venous thromboembolism). Measured concentrations are related to exposure trough concentrations in patients with atrial fibrillation not treated with levetiracetam (empty circles) obtained from our previous studies^15–17.