Rohimi, S., Advani, N., Sastroasmoro, S., Mardiyono, B., Putra, S., Djer, M. M., & Subroto, F. (2012). Tissue doppler imaging in thalassemia major patients: correlation between systolic and diastolic function with serum ferritin level. Paediatrica Indonesiana, 52(4), 187-93. https://doi.org/10.14238/pi52.4.2012.187-93