title: [BLOCKING OF NIDATION].
mesh_terms: D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D010064:Embryo Implantation; D005193:Family Planning Services; D005260:Female; D006801:Humans; D012736:Sex Education
chemical_list: D003270:Contraceptive Agents; D003276:Contraceptives, Oral
keywords: CONTRACEPTIVES, ORAL; FAMILY PLANNING
vernacular_title: BLOCCO DELL'ANNIDAMENTO.