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. 2020 Feb 21;10:3151. doi: 10.1038/s41598-020-60096-1

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© The Author(s) 2020

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Immediate (a) and delayed (b) memory performance stratified by the BDNF Val66Met genotype groups in patients and controls. Combined dot- and box-plot shows the (a) immediate memory index scores and (b) delayed memory index scores (as measured by the Repeatable Battery for the Assessment of Neuropsychological Status) for PTSD patients with the Val/Val (n = 17), Val/Met (n = 23), and Met/Met (n = 10) genotypes and for healthy controls with the Val/Val (n = 25), Val/Met (n = 35), and Met/Met (n = 9) genotypes. *p < 0.05, **p < 0.01; Val/Val patients, Val/Met patients, Met/Met patients, and total healthy controls were compared using the Kruskal-Wallis test with post-hoc pairwise comparisons with Bonferroni correction.