Modulation of the action of chorionic gonadotropin in the baboon (Papio anubis) uterus by a progesterone receptor antagonist (ZK 137. 316) - Banaszak,S.; Brudney,A.; Donnelly,K.; Chai,D.; Chwalisz,K.; Fazleabas,A.T. (Biol Reprod, 2000)