1. NKF-DOQI clinical practice guidelines for the treatment of anemia of chronic renal failure. National Kidney Foundation-Dialysis Outcomes Quality Initiative;Am J Kidney Dis,1997
2. European best practice guidelines for the management of anaemia in patients with chronic renal failure. Working Party for European Best Practice Guidelines for the Management of Anaemia in Patients with Chronic Renal Failure;Nephrol Dial Transplant,1999
3. Ferritin: at the crossroads of iron and oxygen metabolism;Theil;J Nutr,2003