Rostania, W., A. Alam, and D. Hilmanto. “Association of CD4 Cell Counts and Viral Load With Cystatin C Level in Children With Human Immunodeficiency Virus (HIV) Infection”. Paediatrica Indonesiana, Vol. 63, no. 2, Apr. 2023, pp. 88-95, doi:10.14238/pi63.2.2023.88-95.