9Levey AS,Eckardt KU, Tsukamoto Y, et al. Definition and clas sification of chronic kidney disease: A position statemenl from kidney disease: Improving global outcomes(KDIGO). Kidney Int, 2005,67 : 2089-2100.
10Coresh J, Astor BC,Greene T, et al. Prevalence of chronic kidney disease and decreased kidney funetion in the adult US population: Third National Health and Nutrition Examination Survey. Am J Kidney Dis, 2003,1 : 1-12.
