Abbas, B. R. ., S. E. A. Nuraldin, S. S. . Azeez, and K. F. . Dizaye. “Vitamin D Level and Its Correlation to Certain Biochemical Markers in Patients With Chronic Kidney Disease in Erbil City”. Journal of Neonatal Surgery, vol. 14, no. 30S, June 2025, pp. 591-7, https://jneonatalsurg.com/index.php/jns/article/view/7014.