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. 2020 Oct 23;15(10):e0240961. doi: 10.1371/journal.pone.0240961

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© 2020 Wei et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 4 — Taking the cumulative confirmed cases of COVID-19 in China from January 13 to February 13, 2020 as a training set, and setting the upper limit M = 76392. And SPSS is used to fit the Logistic curve of the daily cumulative number of confirmed cases in this period.