Clinical value of histologic endometrial dating for personalized frozen-thawed embryo transfer in patients with repeated implantation failure in natural cycles

Yuan Li, Xiao Feng Li, Jing Nan Liao, Xiang Xiu Fan, Yong Bin Hu, , , Ge Lin & Fei Gong
Abstract Background Displacement of the window of implantation (WOI) has been proposed as an important factor contributing to repeated implantation failure (RIF). However, the use of histologic endometrial dating as a diagnostic tool of endometrial receptivity has been questioned. Methods This study is a prospective intervention trial that enrolled 205 infertile patients from July 2017 to December 2017. Endometrial biopsies from 50 patients with good prognoses were conducted on day 3 (n = 6), 5...
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