Handing EP, Rapp SR, Chen SH, Rejeski WJ, Wiberg M, Bandeen-Roche K, Craft S, Kitzman D, Ip EH. Heterogeneity in Association Between Cognitive Function and Gait Speed Among Older Adults: An Integrative Data Analysis Study. J Gerontol A Biol Sci Med Sci. 2021 Mar 31; 76(4):710-715.