Haspels, A A Effect of postovulatory administration of a "morning-after" injection on corpus luteum function and endometrium. [electronic resource] - Contraception Jan 1977 - 105-12 p. digital Publication Type: Journal Article ISSN: 0010-7824 Standard No.: 10.1016/0010-7824(77)90042-7 doi Subjects--Topical Terms: Contraceptives, Postcoital--pharmacologyContraceptives, Postcoital, Hormonal--pharmacologyCorpus Luteum--drug effectsEndometrium--drug effectsEstradiol--analogs & derivativesFemaleHumansMenstruationOvulationPregnancyProgesterone--blood