Prime Archives in EndocrinologyProgestin versus Gonadotropin-Releasing Hormone Antagonist for the Prevention of Premature Luteinizing Hormone Surges in Poor Responders Undergoing In Vitro Fertilization Treatment: A Randomized Controlled TrialDownloadProgestin-versus-Gonadotropin-Releasing-Hormone-Antagonist-for-the-Prevention-of-Premature-Luteinizing-Hormone-Surges-in-Poor-Responders-Undergoing-In-Vitro-Fertilization-Treatmen