H. K. Abbas, B. O. . Saleh, and H. H. Ghali, “Frequency of 25-Hydroxyvitamin D Deficiency in Pediatric Patients with Immune Thrombocytopenia: Disease Phase and Therapy Options”, J Fac Med Baghdad, vol. 66, no. 4, pp. 460–465, Dec. 2024, doi: 10.32007/jfacmedbaghdad.6642401.