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. 2024 Nov 25;39(1):19–38. doi: 10.1007/s00464-024-11392-8

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 9 — A Forest plot illustrating changes in the WMD of %FEV1 of predicted FEV1 in patients after lung transplantation undergoing Nissen fundoplication. Effect size is plotted to permit comparison of studies reporting %FEV1 values before and after fundoplication. B Forest plot illustrating changes in the WMD of %FEV1 in patients after lung transplantation before and after Toupet fundoplication. Effect size is plotted to permit comparison of studies reporting %FEV1 values before and after fundoplication