Take a sneak peak at this month's Fertility & Sterility! Topics this month include the natural history of fibroids in pregnancy (1:54), semen quality in sons of subfertile couples (09:33), oocyte maturity ratio and live birth rate (18:41), pregnancy outcomes after frozen transfer using Letrozole (22:28), endometrial receptivity assay after failed transfer attempt (36:08), colorectal cancer risk after use of fertility drugs (45:08), and cesarean-section scar defects and abnormal uterine bleeding (56:13). View Fertility and Sterility Volume 118 Issue 4 - https://www.fertstert.org/issue/S0015-0282(21)X0024-6 View Fertility and Sterility at https://www.fertstert.org/