NÆSLUND GRELS, and LUNDKVIST ÖRJAN. “Effect of the Endocrine State of Blastocyst Donors on the Time Required for Initiation of Trophoblast Outgrowth”. Upsala Journal of Medical Sciences 83, no. 3 (September 1, 1978): 135-139. Accessed February 20, 2025. https://ujms.net/index.php/ujms/article/view/7230.