Published on in Vol 23, No 8 (2021): August
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/27681, first published
.
![Development of a COVID-19 Web Information Transmission Structure Based on a Quadruple Helix Model: Webometric Network Approach Using Bing Development of a COVID-19 Web Information Transmission Structure Based on a Quadruple Helix Model: Webometric Network Approach Using Bing](https://asset.jmir.pub/assets/9360ef391f2114a6a0c99350df9ce031.png 480w,https://asset.jmir.pub/assets/9360ef391f2114a6a0c99350df9ce031.png 960w,https://asset.jmir.pub/assets/9360ef391f2114a6a0c99350df9ce031.png 1920w,https://asset.jmir.pub/assets/9360ef391f2114a6a0c99350df9ce031.png 2500w)
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