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Arkela-Kautiainen M, Haapasaari J, Kautiainen H, Leppänen L, Vilkkumaa I, Mälkiä E, Leirisalo-Repo M.Arkela-Kautiainen M, et al. Among authors: haapasaari j.J Rheumatol. 2006 Jul;33(7):1369-76. Epub 2006 Jun 1.J Rheumatol. 2006.PMID: 16758504