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Fleck M, Zhang HG, Kern ER, Hsu HC, Müller-Ladner U, Mountz JD.Fleck M, et al. Among authors: hsu hc.Arthritis Rheum. 2001 Apr;44(4):964-73. doi: 10.1002/1529-0131(200104)44:4<964::AID-ANR154>3.0.CO;2-5.Arthritis Rheum. 2001.PMID: 11315936Free article.