Zhang, Huina, Samuel Kofi Arhin, Junzhao Zhao, Xiaohong Hou, Yilu Chen, and Zhaoxia Huang. “Delayed Development Influences the Outcome of Different Grades of D5 and D6 Blastocysts During freeze–thaw Cycle”. Cellular and Molecular Biology 65, no. 4 (April 30, 2019): 1–5. Accessed March 29, 2024. https://cellmolbiol.org/index.php/CMB/article/view/2661.