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European Geriatric Medicine > 2019 > 10 > 1 > 9-36
Der Internist > 2012 > 53 > 10 > 1240-1247
Aging Clinical and Experimental Research > 2008 > 20 > 2 > 145-152
Journal of General Internal Medicine > 2007 > 22 > 12 > 1661-1667