M.O. Abdieva, and D.D. Saidjalilova. “The Effect of Combined Oral Contraceptives on the Bone Mineral Density in Perimenopausal Women”. Global Journal of Medical Research, vol. 19, no. E1, Jan. 2019, pp. 9-12, https://medicalresearchjournal.org/index.php/GJMR/article/view/1690.