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Mühmer M, Bostelmann R, Sarikaya-Seiwert S, Schneiderhan M, Steiger HJ, Cornelius JF.Mühmer M, et al.Eur Spine J. 2014 Feb;23(2):404-10. doi: 10.1007/s00586-013-3045-5. Epub 2013 Oct 6.Eur Spine J. 2014.PMID: 24097259Free PMC article.Review.