IL6 and COVID-19: Some studies reported that other inflammatory markers are also associated with adverse outcomes in COVID-19, such as NLR, platelet/lymphocyte ratio, serum procalcitonin, ferritin, D-dimer, LDH, IL-6 etc.[34–37] Conversely, we analyzed other hematological indicators and found that lymphocyte count (P = .146) and neutrophil/lymphocyte ratio (P = .442) were not significantly correlated with occurrence of COVID-19 pneumonia.