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Changes From Baseline in Levels of D-Dimer by Treatment Group Among Hospitalized Patients With COVID-19. Error bars denote 95% CIs. a40 observations from 28 participants. b50 observations from 34 participants. COVID-19 indicates coronavirus disease 2019; LSM, least squares mean; nVNS, non-invasive vagus nerve stimulation; SoC, standard of care.
