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. 2020 Sep 29;7:571542. doi: 10.3389/fmed.2020.571542

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Copyright © 2020 Zhao, Lin, Zhou, Wang, Chen, Clifford, Akca, Huang and Chen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Correlation analysis of PaO₂/FiO₂ ratio before intubation with laboratory parameters in critically ill patients with COVID-19 undergoing invasive mechanical ventilation. (A) Leukocyte count, (B) Lymphocyte count, (C) Neutrophil count, (D) Platelet count, (E) AST/ALT, (F) BUN, (G) Creatinine, (H) TnI, (I) CRP. R represents the Pearson's correlation coefficient. P/F, PaO₂/FiO₂ ratio; ALT, alanine transaminase; AST, aspartate transaminase; BUN, blood urea nitrogen; TnI, troponin I; CRP, C reactive protein.