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. 2023 Feb 28;20(5):4363. doi: 10.3390/ijerph20054363

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© 2023 by the authors.

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/).

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Forest Plot of the Effect of Sleep Duration on Glycated Haemoglobin [HbA1c]. CI, confidence interval; I², statistic of heterogeneity [42,45,51,71,81,83,85,98].