Tindar, M. (2018) “A Comparative Study of Nomegestrol Acetate and a Combination of Ethinylestradiol and Levonorgestrel for Delaying Menstruation among Umrah Pilgrims”, Indonesian Journal of Obstetrics and Gynecology, 6(1), pp. 45–49. doi: 10.32771/inajog.v6i1.757.