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Englund M, Guermazi A, Roemer FW, Aliabadi P, Yang M, Lewis CE, Torner J, Nevitt MC, Sack B, Felson DT.Englund M, et al. Among authors: sack b.Arthritis Rheum. 2009 Mar;60(3):831-9. doi: 10.1002/art.24383.Arthritis Rheum. 2009.PMID: 19248082Free PMC article.