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Archives of Gerontology and Geriatrics > 2007 > 45 > 2 > 159-167
Preventive Medicine > 2007 > 45 > 2-3 > 153-156
Archives of Gerontology and Geriatrics > 2007 > 45 > 2 > 159-167
Preventive Medicine > 2007 > 45 > 2-3 > 153-156