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Ageberg E, Link A, Roos EM.Ageberg E, et al. Among authors: roos em.BMC Musculoskelet Disord. 2010 Jun 17;11:126. doi: 10.1186/1471-2474-11-126.BMC Musculoskelet Disord. 2010.PMID: 20565735Free PMC article.