Urinary Retinol-Binding Protein: Relationship to Renal Function and Cardiovascular Risk Factors in Chronic Kidney Disease - Domingos, Maria Alice Muniz; Moreira, Silvia Regina; Gomez, Luz; Goulart, Alessandra Carvalho; Lotufo, Paulo Andrade; Benseñor, Isabela; Titan, Silvia (PloS One, 2016)