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de Boer MD, Morse CI, Thom JM, de Haan A, Narici MV.de Boer MD, et al. Among authors: de haan a.J Gerontol A Biol Sci Med Sci. 2007 Sep;62(9):1022-7. doi: 10.1093/gerona/62.9.1022.J Gerontol A Biol Sci Med Sci. 2007.PMID: 17895442Free article.