Abnormal endometrial development occurs during the luteal phase of nonsupplemented donor cycles treated with recombinant folliclestimulating hormone and gonadotropin-releasing hormone antagonists - Kolibianakis,E.M.; Bourgain,C.; Platteau,P.; Albano,C.; Van Steirteghem,A.C.; Devroey,P. (Fertil Steril, 2003)