title: A clinical evaluation of a monthly injection for conception control.
mesh_terms: D000098:Acetophenones / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D003270:Contraceptive Agents / Q000008:administration & dosage*; D003273:Contraceptive Devices; D003276:Contraceptives, Oral; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology*
chemical_list: D000098:Acetophenones; D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D011374:Progesterone; D004958:Estradiol