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Jones A, Clarke A, Freeman BJ, Lam KS, Grevitt MP.Jones A, et al. Among authors: grevitt mp.Spine (Phila Pa 1976). 2005 Aug 15;30(16):1867-9. doi: 10.1097/01.brs.0000173898.47585.7d.Spine (Phila Pa 1976). 2005.PMID: 16103857
Karampalis C, Grevitt M, Shafafy M, Webb J.Karampalis C, et al.Eur Spine J. 2012 May;21 Suppl 2(Suppl 2):S200-6. doi: 10.1007/s00586-012-2190-6. Epub 2012 Feb 23.Eur Spine J. 2012.PMID: 22358338Free PMC article.