Rudel, H W Assay of the anti-oestrogenic effects of progestagens in women. [electronic resource] - Journal of reproduction and fertility Apr 1967 - 199-203 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0022-4251 Standard No.: 10.1530/jrf.0.0130199 doi Subjects--Topical Terms: Biological AssayChlormadinone Acetate--pharmacologyContraceptives, Oral--pharmacologyEndometrium--cytologyFemaleHumansNorethindrone--pharmacology