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World J Clin Cases. Jan 7, 2022; 10(1): 1-11
Published online Jan 7, 2022. doi: 10.12998/wjcc.v10.i1.1
Figure 1
Figure 1 Linear trend of number of severe acute respiratory syndrome coronavirus 2 infected cases (January 22, 2020 to December 21, 2021). Source: https://www.worldometers.info/coronavirus/#countries.