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. 2022 Jul 31;11(15):4468. doi: 10.3390/jcm11154468

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© 2022 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 comparing phrenic nerve injury between elderly and younger groups [6,11,12,13,16,17,19,21,22,23,28,29]. The dotted red line represents the pooled risk ratio for phrenic nerve injury between elderly and younger groups.