[ 3] Kidney Disease: Improving Global Outcomes ( KDIGO) CKD Work Group. KDIGO 2013 ClinicalPractice Guideline for the E- valuation and Management of Chronic Kidney Disease[M]. Kid- ney Int Suppl, 2013, 3: 5 -14.
[ 4] US Renal Data System. USRDS 2009 Annual Data Report: Atlas of Chronic Kidney Disease and EndStage Renal Disease[M]. Be- thesda, MD: National Institutes of Health, National Institute of Di- abetes and Digestive and Kidney Diseases, 2009.
[ 5] Go AS, Chertow GM, Fan D, et al. Chronic kidney disease and the risks of death, cardiovascular events, and hospitalization[J]. New Engl J Med, 2004, 351: 1296 -1305.