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Tractenberg RE, Jin S, Patterson M, Schneider LS, Gamst A, Thomas RG, Thal LJ.Tractenberg RE, et al. Among authors: thal lj.J Am Geriatr Soc. 2000 Nov;48(11):1478-82.J Am Geriatr Soc. 2000.PMID: 11083327Free PMC article.