Anggarini, Dwi, Anita Rahmawati, and Margono Margono. “The Use of Hormonal Contraception and Breast Cancer”. Jurnal Kesehatan Ibu dan Anak 12, no. 2 (January 4, 2019): 85-92. Accessed February 21, 2020. http://e-journal.poltekkesjogja.ac.id/index.php/kia/article/view/139.