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Lee, Yunhwan, Jinhee Kim, Eun Sook Han, Songi Chae, Mikyung Ryu, Kwang Ho Ahn, und Eun Ju Park. "Changes in Physical Activity and Cognitive Decline in Older Adults Living in the Community." Age (Dordr) 2015.

Lee, Yunhwan, et al. "Changes in Physical Activity and Cognitive Decline in Older Adults Living in the Community." Age (Dordr) 2015.