. 2023 Apr 5;10(4):689. doi: 10.3390/children10040689
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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Figure 2.
PRISMA flowchart. Abbrev. ENT: otolaryngology.