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Parks RM, König MA, Boszczyk B, Shafafy M.Parks RM, et al.Eur Spine J. 2013 Jan;22(1):21-5. doi: 10.1007/s00586-012-2194-2. Epub 2012 Mar 2.Eur Spine J. 2013.PMID: 22382724Free PMC article.
König MA, Boszczyk BM.König MA, et al. Among authors: boszczyk bm.Eur Spine J. 2012 Mar;21(3):390-5. doi: 10.1007/s00586-011-1994-0. Epub 2011 Oct 19.Eur Spine J. 2012.PMID: 22008862Free PMC article.