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. 2023 Oct 10;13:46. doi: 10.1186/s13561-023-00460-9

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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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Co-citation references network and corresponding clustering visualization generated by CiteSpace. Note: A node represents a cited reference. The network is organized by the betweenness centrality of every node. The size of a node is proportional to its betweenness centrality. A node with high betweenness centrality is usually one that connects two or more clusters or lies at the core within a cluster, and the correspondent cited literature has a significant impact on the local network. The highlighted lines represent the evolution and connections among different clusters