Endometrial thickness after ovarian stimulation with gonadotropin, clomiphene, or letrozole for unexplained infertility, and association with treatment outcomes

Alexander Quaas, Sarah Z. Gavrizi, Jennifer D. Peck, Michael P. Diamond, Richard S. Legro, Randal D. Robinson, Peter R. Casson, Gregory M. Christman, Heping Zhang, Karl R. Hansen