Ibrahimi, E., and M. Koni. “Effects of Estrogens and Progestagens on the Primary Variables of Haemostasis”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 3, no. 1, Dec. 2016, pp. 31-33, https://www.ijrcog.org/index.php/ijrcog/article/view/741.