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Ikdahl E, Hisdal J, Rollefstad S, Olsen IC, Kvien TK, Pedersen TR, Semb AG.Ikdahl E, et al. Among authors: hisdal j.Arthritis Res Ther. 2015 Oct 8;17:279. doi: 10.1186/s13075-015-0795-y.Arthritis Res Ther. 2015.PMID: 26445924Free PMC article.Clinical Trial.