Fig. 1From: Elevated free interleukin-18 associated with severity and mortality in prospective cohort study of 206 hospitalised COVID-19 patientsConsort diagram. Inclusion criteria enabled enrolment of 272 eligible patients, from whom 1732 aliquots of serum and Ethylenediamine tetraacetic acid (EDTA) plasma and serum blood samples were obtained. Discarding of samples due to insufficient volumes for enzyme-linked immunosorbent assay (ELISA) left 1523 aliquots, of which, 1228 could be matched to day from symptom onset, from 206 patientsBack to article page