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. 2020 Nov 12;10(11):e041989. doi: 10.1136/bmjopen-2020-041989

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© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Survival of patients with COVID-19 receiving respiratory support plotted against fibrosis-4 (FIB-4) index (A) and number of risk factors (B).

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