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Gangavati A, Hajjar I, Quach L, Jones RN, Kiely DK, Gagnon P, Lipsitz LA.Gangavati A, et al.J Am Geriatr Soc. 2011 Mar;59(3):383-9. doi: 10.1111/j.1532-5415.2011.03317.x.J Am Geriatr Soc. 2011.PMID: 21391928Free PMC article.