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. 2023 Sep 6;46(1):226. doi: 10.1007/s10143-023-02132-y

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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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Fig. 1 — Violin plot comparing tumor volumes (CM and GBM) in the pre-COVID and COVID cohorts. Tumor volumes at time of diagnosis were statistically significantly larger in the COVID group than in the pre-COVID group. The dashed lines represent median values; the dotted lines represent quartiles. The width of the bars corresponds to the number of patients with a given tumor volume