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Kox M, van Eijk LT, Verhaak T, Frenzel T, Kiers HD, Gerretsen J, van der Hoeven JG, Kornet L, Scheiner A, Pickkers P.Kox M, et al. Among authors: frenzel t.Arthritis Res Ther. 2015 Jun 7;17(1):150. doi: 10.1186/s13075-015-0667-5.Arthritis Res Ther. 2015.PMID: 26049730Free PMC article.Clinical Trial.