Bayati, F., M. Eftekhar, N. Homayoon, and H. Fatehi. “Comparison of Doppler Ultrasound Indices of Uterine Artery and Sub Endometrial Blood Supply in Frozen Embryo Transfer With and Without Repeated Implantation Failure: A Cross-Sectional Study”. International Journal of Reproductive BioMedicine (IJRM), Vol. 21, no. 11, Dec. 2023, pp. 937–942, doi:10.18502/ijrm.v21i11.14657.