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. 2020 Jun 15;67(9):1217–1248. doi: 10.1007/s12630-020-01740-2

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© Canadian Anesthesiologists' Society 2020, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 1 — PRISMA flow diagram for systematic review 1 on efficacy and safety of HFNC in acute hypoxemic respiratory failure. SR = systematic reviews; RCT = randomized-controlled trial