Life-Space Constriction, Development of Frailty, and the Competing Risk of Mortality: The Women's Health and Aging Study I.
Xue, Qian-Li 1,2; Fried, Linda P. 1,2; Glass, Thomas A. 3; Laffan, Alison 3; Chaves, Paulo H. M. 1,2
American Journal of Epidemiology.
167(2):240-248, January 15, 2008.
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