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. 2021 Apr 12;12:578708. doi: 10.3389/fphys.2021.578708

FIGURE 2.

FIGURE 2

Time-course of mean P50 in the COVID-19 group (red circles) and the non-COVID-19 group (blue squares). Some days were regrouped to have sufficient number of samples (D810: n = 15 in the COVID-19 group and n = 10 in the non-COVID-19 group; D1115: n = 11 in both groups; D1618: n = 4 and n = 6, respectively). Data are presented as means and SE.