Dynnik , V., O. . Dynnik, and A. Druzhinina. “Role of Vitamin D in the Formation of Abnormal Uterine Bleeding in the Pubertate Period”. Medicni Perspektivi, vol. 27, no. 3, Sept. 2022, pp. 90-96, doi:10.26641/2307-0404.2022.3.265940.