WONODIREKSO, S.; HADISAPUTRA, W.; AFFANDI, B.; SIREGAR, B.; ROGERS, P. A. 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, v. 7, n. 1, p. 16-24, 1 Jan. 1998.