Andayani, Sri, Nanan Sekarwana, and Ryadi Fadil. 2008. “Association Between Age and Serum Ferritin Level With Bone Age Deficit in Children With Thalassemia Major”. Paediatrica Indonesiana 48 (1), 33-6. https://doi.org/10.14238/pi48.1.2008.33-6.