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Lix LM, Yan L, Blackburn D, Hu N, Schneider-Lindner V, Shevchuk Y, Teare GF.Lix LM, et al. Among authors: shevchuk y.BMC Geriatr. 2015 Mar 11;15:24. doi: 10.1186/s12877-015-0023-2.BMC Geriatr. 2015.PMID: 25886888Free PMC article.