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Open Access

Expression of Concern

Expression of Concern: An Improved Migratory Birds Optimization Algorithm for Closed- Loop Supply Chain Network Planning in a Fuzzy Environment

  • The PLOS One Editors

After this article [1] was published, concerns were identified by the PLOS One Editors regarding the article’s peer review and compliance with the PLOS Authorship policy. We regret that the issues were not addressed prior to the article’s publication.

In light of the cumulative issues, the PLOS One Editors issue this Expression of Concern. Readers are advised to interpret the article [1] with caution.

Reference

  1. 1. Ren Y, Chen Q, Lau Y-Y, Dulebenets MA, Li M, Li B, et al. An Improved Migratory Birds Optimization Algorithm for Closed- Loop Supply Chain Network Planning in a Fuzzy Environment. PLoS One. 2024;19(6):e0306294. pmid:38935787

Citation: The PLOS One Editors (2025) Expression of Concern: An Improved Migratory Birds Optimization Algorithm for Closed- Loop Supply Chain Network Planning in a Fuzzy Environment. PLoS One 20(8): e0329803. https://doi.org/10.1371/journal.pone.0329803

Published: August 6, 2025

Copyright: © 2025 The PLOS One Editors. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.