NILSSON OVE, and NYGREN KARL-GÖSTA. “Ultrastructure of Human Uterine Epithelium at the Time of Implantation After Postovulatory Administration of Norethindrone”. Upsala Journal of Medical Sciences 79, no. 2 (June 1, 1974): 65-71. Accessed May 16, 2024. https://ujms.net/index.php/ujms/article/view/7401.