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Ji-Rong Y, Bi-Rong D, Chang-Quan H, Yan-Ling Z.Ji-Rong Y, et al.J Am Geriatr Soc. 2009 Apr;57(4):732-3. doi: 10.1111/j.1532-5415.2009.02201.x.J Am Geriatr Soc. 2009.PMID: 19392966No abstract available.