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Kwakkenbos L, van den Hoogen FH, Custers J, Prins J, Vonk MC, van Lankveld WG, Becker ES, van den Ende CH.Kwakkenbos L, et al.Arthritis Care Res (Hoboken). 2012 Jun;64(6):930-4. doi: 10.1002/acr.21618. Epub 2012 Jan 19.Arthritis Care Res (Hoboken). 2012.PMID: 22262505Free article.