Kristiani, D., P. Kusuma, and P. Suryantoro. “Diagnostic Accuracy of Single-Voided Urine Protein/ Creatinine Ratio for Proteinuria Assessment in Children With Nephrotic Syndrome”. Paediatrica Indonesiana, Vol. 49, no. 6, Dec. 2009, pp. 355-8, doi:10.14238/pi49.6.2009.355-8.