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. 2020 Nov 9;49(D1):D1534–D1540. doi: 10.1093/nar/gkaa952

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Published by Oxford University Press on behalf of Nucleic Acids Research 2020.

This work is written by (a) US Government employee(s) and is in the public domain in the US.

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Figure 3. — (A) cumulative growth of LitCovid, accessed 21 September 2020. The compound daily growth rate was calculated based on the number of articles added daily; (B) topic distributions and co-occurrences among the topics.