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. 2023 Feb 5;248(4):309–316. doi: 10.1177/15353702221139185

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Figure 2. — Time-course of (a) HO-1, (b) hemopexin, and (c) heme levels on the day of admission and on the fourth day of hospitalization of patients with COVID-19. Results shown as mean and P values are from Wilcoxon test or paired t-test according to data distribution (n = 28–30 per group).