Profound LH suppression after GnRH antagonist administration is associated with a significantly higher ongoing pregnancy rate in IVF. - Kolibianakis,E.M.; Zikopoulos,K.; Schiettecatte,J.; Smitz,J.; Tournaye,H.; Camus,M.; Van,Steirteghem.; Devroey,P. (Hum Reprod, 2004)