CD40LG and COVID-19: Of this 81 blood samples from SARS-CoV-2-infected patients and 40 blood samples from non-COVID-19 patients, we presented the sensitivity, specificity, PPV, NPV, LR+, LR– and AUROC values for IgM, IgG, IgM/IgG (either one of them positive), IgM/IgG/CT (either one of them positive) at different time point separately in Table S1 and Figure 2.