Since this article has been suspected of research misconduct and the corresponding authors did not respond to our request to prove originality of data and figures, "MiR-20a regulates fibroblast-like synoviocyte proliferation and apoptosis in rheumatoid arthritis, by X.-J. Wei, X.-W. Li, J.-L. Lu, Z.-X. Long, J.-Q. Liang, S.-B. Wei, C.-X. Lu, W.-Z. Lu, published in Eur Rev Med Pharmacol Sci 2017; 21 (17): 3886-3893-PMID: 28975975" has been withdrawn. The Publisher apologizes for any inconvenience this may cause. https://www.europeanreview.org/article/13351.