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. 2024 Jan 30;150(2):54. doi: 10.1007/s00432-023-05531-2

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© The Author(s) 2024

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. 7 — Visualization analysis diagram of keywords. A Word cloud based on keywords from KeyWords Plus. B Top 10 keywords for the occurrence frequency based on KeyWords Plus. C Co-occurrence analysis map of all keywords. D Co-occurrence trend over the year of all keywords. E Co-occurrence analysis map based on Author keywords. F Density map of all keywords after removing tumor-related keywords