J. Y. Chiew, J. Thiruchelvam, M. A. Bin Rahmat, S. P. William, Z. I. Bin Shafien, and K. G. Banerjee, “The key complications of beta thalassemia major: a review and update”, Int J Res Med Sci, vol. 9, no. 6, pp. 1846–1852, May 2021.