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Kjeken I, Slatkowsky-Christensen B, Kvien TK, Uhlig T.Kjeken I, et al. Among authors: kvien tk.Arthritis Rheum. 2004 Oct 15;51(5):709-15. doi: 10.1002/art.20522.Arthritis Rheum. 2004.PMID: 15478169Free article.