Arkhypkina, T., V. Bondarenko, O. Goncharova, and Lyubimovа L. “Vitamin D Level and Indicators of Carbohydrate Metabolism in Women With Polycystic Ovary Syndrome”. INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine), vol. 16, no. 5, Sept. 2020, pp. 381-6, doi:10.22141/2224-0721.16.5.2020.212740.