1. Associations between a new day 4 embryo grading system and implantation rates in frozen embryo transfer (FET) cycles. Issue 42 (16th October 2020) Authors: Li, Hongxing; Xu, Xiaojuan; Jing, Yuanxue; Liu, Ling; Wang, Yiqing Other Names: Perovic. Milan section editor. Journal: Medicine Issue: Volume 99:Issue 42(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗