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. 2021 May 10;11:9895. doi: 10.1038/s41598-021-89180-w

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© The Author(s) 2021, corrected publication 2021

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Box plots of the serum concentrations of ADMA (a) and SDMA (b) in the initial blood sample of hospitalized COVID-19 patients (N = 31). Boxes show median ± interquartile range, with whiskers representing 10th to 90th percentile; outliers are plotted individually.