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Gruber-Baldini AL, Stuart B, Zuckerman IH, Simoni-Wastila L, Miller R.Gruber-Baldini AL, et al.J Am Geriatr Soc. 2007 Oct;55(10):1508-16. doi: 10.1111/j.1532-5415.2007.01387.x. Epub 2007 Aug 28.J Am Geriatr Soc. 2007.PMID: 17727648