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(A) Association between NLR and mortality in COVID‐19 patients. (B) Subgroup analysis according to the origin country of the association between NLR and mortality in COVID‐19 patients. (C) Subgroup analysis according to study design of the association between NLR and mortality in COVID‐19 patients. (D) Sensitivity analysis according to risk of bias of the association between NLR and mortality in COVID‐19 patients
