Fig. 8
From: Increased interleukin-6 is associated with long COVID-19: a systematic review and meta-analysis
Publication bias analysis of the included studies. A Funnel plot of cohorts with long COVID-19 versus healthy individuals. B Funnel plot of cohorts with long COVID-19 versus acute COVID-19. C Funnel plot of cohorts with acute COVID-19 versus healthy individuals. D Funnel plot of cohorts with long COVID-19 versus non-PASC. E Funnel plot of cohorts with non-PASC versus healthy individuals