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. 2022 Mar 11;13:817620. doi: 10.3389/fendo.2022.817620

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Copyright © 2022 Liu, Wang, Qin, Jin, Jin, Gu and Mu

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) The author co-citation network. The configurations set as: pruning pathfinder, algorithm log-likelihood rate (LLR), time slice l, top N 50 per year, link-retaining factor (LRF) = 3, look back years (LBY) = 5, and e l = 1. The node size referred to the number of citations of a specific author, while the links represented the frequency of the co-citation for two authors. The higher betweenness centrality (betweenness centrality > 0.l) represented the leading researchers and was expressed as a purple circle around the node. (B) The top 6 co-cited author with annul citation counts.