Progesterone rise on HCG day in GnRH antagonist/rFSH stimulated cycles affects endometrial gene expression. - Van Vaerenbergh, I.; Fatemi, H. M.; Blockeel, C.; Van Lommel, L.; Veld, P. In't; Schuit, F.; Kolibianakis, E. M.; Devroey, P.; Bourgain, C. (Reproductive BioMedicine Online (Reproductive Healthcare Limited), 2011)