COVID-19(54) SARS-CoV-2(39) marker(15) elevated(15) severe disease(15) coronavirus disease(15) Patient(15) Coagulation(12) Injury(11) pandemic(11) biochemical(11) severity(11) China(11) mean difference(11) while(11) interleukin(11) non-survivor(11) WBC(11) significantly(11) hospitalized patient(11) Critical(11) Meta-analysis(11) Serum ferritin(11) IL-6(11) 95% confidence interval(11) Laboratory(11) lymphocyte(11) fatal COVID-19(11) survivor(11) Platelet(11)