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Levels of anti-PF4 antibodies according to various demographic and clinical parameters in hospitalized patients with COVID-19. (A–D) Shown are the levels of anti-PF4 antibodies in hospitalized patients with COVID-19 analyzed according to sex (A), ethnic origin (B), age (C), and BMI (D). The statistical differences reported on the top for the indicated groups were evaluated by unpaired, two-tailed t tests; the other comparisons were not statistically significant.
