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. 2022 Dec 30;15(1):180. doi: 10.3390/nu15010180

Figure 3.

Figure 3

Incidence rate of influenza-like illness, COVID-19, and non-COVID-19 influenza-like illness in the vitamin D supplementation and control groups during COVID-19-non-vaccinated observation time. 95% confidence intervals are based on the methods described by Sahai and Khurshid [41].

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