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Systematic Reviews > 2017 > 6 > 1 > 1-6
BMC Geriatrics > 2016 > 16 > 1 > 1-10
Journal of the Academy of Nutrition and Dietetics > 2014 > 114 > 2 > 220-229
Aging Clinical and Experimental Research > 2012 > 24 > 1 > 68-73
Journal of Clinical Epidemiology > 2008 > 61 > 12 > 1261-1270