Darcie, Silvana, and Cléa Rodrigues Leone. “The Role of Serum and Urinary Urea in the Evaluation of Enteral Protein Intake in Adequate and Small-for-Gestational-Age Very Low Birth Weight Infants”. São Paulo Medical Journal 123, no. 6 (November 11, 2005): 261–265. Accessed October 16, 2025. https://periodicosapm.emnuvens.com.br/spmj/article/view/2387.