Dyussenova , S. B., M. Y. Gordiyenko, . G. B. Serikova, . S. A. Turlybekova, . A. A. Issayeva, . N. A. Yerimbetova, and . V. O. Goroshko. “Vitamin D Deficiency in Children With Chronic Renal Disease”. Open Access Macedonian Journal of Medical Sciences, vol. 9, no. B, Nov. 2021, pp. 1751-7, doi:10.3889/oamjms.2021.6991.