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Houben JM, Giltay EJ, Rius-Ottenheim N, Hageman GJ, Kromhout D.Houben JM, et al.J Gerontol A Biol Sci Med Sci. 2011 Jan;66(1):38-44. doi: 10.1093/gerona/glq164. Epub 2010 Oct 1.J Gerontol A Biol Sci Med Sci. 2011.PMID: 20889650