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. 2022 May 6;9:868087. doi: 10.3389/fmed.2022.868087

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Copyright © 2022 Dong, Liu, Han, Zhang, Wang, Li, Li, Liu, Zhou, Li, Wang, Shen, Zhang, Zhang and Hu.

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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Network on keywords of artemisinin. (A) The 150 keywords that occurred more than 80 times were divided into 3 clusters by different colors: cluster 1: red, cluster 2: green, cluster 3: blue. The size of the nodes represents the frequency of occurrences. (B) Visualization of keywords according to the average publication year (APY). Keywords in yellow appeared later than that in blue. (C) Top 20 representative burst keywords.