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. 2021 Aug 3;21:737. doi: 10.1186/s12879-021-06447-3

Fig. 2.

Fig. 2

Receiver operating characteristic curve of lymphocyte counts (LYM), C-reaction protein (CRP), erythrocyte sedimentation rate (ESR), interleukin-6 (IL-6), and serum surfactant protein D (SP-D)