Fox CS, Matsushita K, Woodward M, Bilo HJG, Chalmers J, Heerspink HJLambers, Lee BJ, Perkins RM, Rossing P, Sairenchi T, et al. Associations of kidney disease measures with mortality and end-stage renal disease in individuals with and without diabetes: a meta-analysis. Lancet. 2012 ;380(9854):1662-73.