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Czaprowski D, Kotwicki T.Czaprowski D, et al. Among authors: kotwicki t.Eur Spine J. 2012 Jan 31;21(6):1216-7. doi: 10.1007/s00586-012-2166-6. Online ahead of print.Eur Spine J. 2012.PMID: 22290784Free PMC article.No abstract available.