Arifin, Zairul, Feraluna Nasution, and Adi Sutjipto. “Acute Lymphoblastic Leukemia in the Department of Child Health, School of Medicine, University of North Sumatera/ Dr. Pirngadi Hospital Medan (1980 - 1988)”. Paediatrica Indonesiana 31, no. 7-8 (May 17, 2019): 185–90. Accessed April 21, 2025. https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/2135.