Analysis of the guidance value of 3D ultrasound in evaluating endometrial receptivity for frozen-thawed embryo transfer in patients with repeated implantation failure - Tong, Ruiqing; Zhou, Ying; He, Qi; Zhuang, Yanyan; Zhou, Weiqin; Xia, Fei (Annals of Translational Medicine; Vol 8, No 15 (August 14, 2020): Annals of Translational Medicine, 2020)