title: Antifertility effectiveness of megestrol acetate: reference to previous papers on the role of oil vehicle.
mesh_terms: D000284:Administration, Oral; D003278:Contraceptives, Oral, Hormonal / Q000008:administration & dosage / Q000592:standards*; D005260:Female; D006801:Humans; D008535:Megestrol / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000592:standards; D009821:Oils
chemical_list: D003278:Contraceptives, Oral, Hormonal; D009821:Oils; D008535:Megestrol