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Papadakis M, Papadokostakis G, Kampanis N, Sapkas G, Papadakis SA, Katonis P.Papadakis M, et al. Among authors: sapkas g.BMC Musculoskelet Disord. 2010 Jan 2;11:1. doi: 10.1186/1471-2474-11-1.BMC Musculoskelet Disord. 2010.PMID: 20044932Free PMC article.