Wonodirekso, Sugito, Wachju Hadisaputra, Biran Affandi, Budiningsih Siregar, and Peter A.W. Rogers. “Cytokeratin 8,18 and 19 Expressions, Epithelial Shedding, and Stromal Extravasation in Endometrium of Norethisterone Enanthate (NET-EN) Progestogen Contraceptive Users (A Preliminary Report)”. Medical Journal of Indonesia 7, no. 1 (January 1, 1998): 16-24. Accessed December 7, 2022. http://mji.ui.ac.id/journal/index.php/mji/article/view/792.