M. S. Nayak, D. D. Kala, and A. Agarwal, “Hormonal effects of drosperinone and ethinyl estradiol based combined oral contraceptives on polycystic ovarian syndrome”, Int J Reprod Contracept Obstet Gynecol, vol. 10, no. 5, pp. 1824–1827, Apr. 2021.