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Boström AM, Van Soest D, Kolewaski B, Milke DL, Estabrooks CA.Boström AM, et al.J Am Med Dir Assoc. 2011 Mar;12(3):217-25. doi: 10.1016/j.jamda.2010.07.005. Epub 2010 Oct 8.J Am Med Dir Assoc. 2011.PMID: 21333925