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. 2021 Oct 6;8:750558. doi: 10.3389/fmolb.2021.750558

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Copyright © 2021 Guo, Jiang, Liu, Zhao, Li and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Comparison of longitudinal changes in the percentage of patients with DLCO <80% of predicted. Forest plot showing meta-analysis of the percentage of patients with DLCO <80% of predicted.