Whitson HE, Arnold AM, Yee LM, Mukamal KJ, Kizer JR, Djoussé L, Ix JH, Siscovick D, Tracy RP, Thielke SM, et al. Serum carboxymethyl-lysine, disability, and frailty in older persons: the Cardiovascular Health Study. J Gerontol A Biol Sci Med Sci. 2014  ;69(6):710-6.