Comparison of Pregnancy Rate (HCG+ Level) Obtained After a Replacement Embryonic in Spontaneous Cycle and Following Protocol "NPP". Comparison Clinical Trials in Brussels

Prospective Randomized Non-Inferiority Study Comparing Natural Cycle Frozen Embryo Transfer (NC-FET) to a New Type of Endometrial Preparation for FET: Natural Proliferative Phase (NPP-FET)