Sandinirwan, I., A. Primadi, and D. Hilmanto. “Serum Creatinine Levels to Estimate Kidney Function in Small-for-Gestational Age and Appropriate-for-Gestational Age Newborns”. Paediatrica Indonesiana, Vol. 58, no. 6, Dec. 2018, pp. 305-11, doi:10.14238/pi58.6.2018.305-11.