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Skapenko A, Leipe J, Lipsky PE, Schulze-Koops H.Skapenko A, et al.Arthritis Res Ther. 2005;7 Suppl 2(Suppl 2):S4-14. doi: 10.1186/ar1703. Epub 2005 Mar 16.Arthritis Res Ther. 2005.PMID: 15833146Free PMC article.Review.