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Hoekstra M, van Ede AE, Haagsma CJ, van de Laar MA, Huizinga TW, Kruijsen MW, Laan RF.Hoekstra M, et al.Ann Rheum Dis. 2003 May;62(5):423-6. doi: 10.1136/ard.62.5.423.Ann Rheum Dis. 2003.PMID: 12695153Free PMC article.Clinical Trial.
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