Hamid, Naila, Muhammad Faisal Shafique, Qamar -uz- Zaman, and Hafsa Niaz. “Frequency And Significance of Electrocardiographic Changes in Beta Thalassemia Major Patients”. Pakistan Armed Forces Medical Journal 72, no. 1 (February 28, 2022): 136–40. Accessed May 12, 2025. https://pafmj.org/PAFMJ/article/view/3725.