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WHO O2CoV2: oxygen requirements and respiratory support in patients with COVID-19 in low-and-middle income countries-protocol for a multicountry, prospective, observational cohort study.
Relan P, Murthy S, Marshall JC, Annane D, Chevret S, Arabi YM, Waweru-Siika W, Dominguez Rodriguez S, Convocar P, Diaz J; World Health Organization Respiratory Support Research Group; World Health Organization O2CoV2 International Study Steering Committee. Relan P, et al. BMJ Open. 2023 Aug 17;13(8):e071346. doi: 10.1136/bmjopen-2022-071346. BMJ Open. 2023. PMID: 37591648 Free PMC article.