Abdul Wahid, S. F., R. Rahmat, S. Azhar, N. H. Hussin, and C. S. Keng. “Hydroxyurea Appears Beneficial in Patients With Beta-Thalassaemia Major and Intermedia”. Medical Journal of Indonesia, vol. 16, no. 2, May 2007, pp. 78-83, doi:10.13181/mji.v16i2.259.