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König MA, Jehan S, Balamurali G, Bierschneider M, Grillhösl A, Boszczyk BM.König MA, et al. Among authors: jehan s.Eur Spine J. 2012 Sep;21(9):1873-9. doi: 10.1007/s00586-012-2264-5. Epub 2012 Apr 6.Eur Spine J. 2012.PMID: 22481549Free PMC article.