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Vascular responses to mental stress in COVID-19 survivors. Forearm blood flow (FBF) during mental stress (MS) in control subjects and in severe COVID-19 survivors (A); delta FBF (B); forearm vascular conductance (FVC) (C); and delta FVC (D). BL, baseline; Rec, recovery. *P < 0.05 vs. BL; †P < 0.05 vs. control subjects.
