Li, Q., Y. Zhang, and L. Zou. “The Effect of Low-Molecular-Weight Heparin on Immune Balance of Patients With Repeated Implantation Failure During the Implantation Window: Heparin in Patients With Repeated Implantation Failure”. Cellular and Molecular Biology, vol. 69, no. 4, Apr. 2023, pp. 112-5, doi:10.14715/cmb/2023.69.4.17.