Corrigendum: An endometrial receptivity scoring system evaluated by ultrasonography in patients undergoing frozen–thawed embryo transfer: a prospective cohort study - Ouyang, Yan; Peng, Yangqin; Mao, Yuyao; Zheng, Mingxiang; Gong, Fei; Li, Yuan; Li, Xihong (Frontiers in Medicine, 2024)