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Gibbon VE, Harington JS, Penny CB, Fredlund V.Gibbon VE, et al.Joint Bone Spine. 2010 Oct;77(5):399-404. doi: 10.1016/j.jbspin.2010.01.013. Epub 2010 May 14.Joint Bone Spine. 2010.PMID: 20471895Review.