Masud T, Manatunga A, Cotsonis G, Mitch WE., The precision of estimating protein intake of patients with chronic renal failure Kidney Int. 2002 Nov;62(5):1750-6
Maroni BJ, Steinman TI, Mitch WE., A method for estimating nitrogen intake of patients with chronic renal failure.
Kidney Int. 1985 Jan;27(1):58-65.
Dietary Protein Restriction in the Management of Chronic Kidney Disease Touch Briefings (PDF)