title: Ovarian function during treatment with high ratio levonorgestrel/ethinyl estradiol as oral contraceptives.
mesh_terms: D003276:Contraceptives, Oral / Q000008:administration & dosage*; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage; D003280:Contraceptives, Oral, Synthetic / Q000008:administration & dosage*; D004997:Ethinyl Estradiol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D009644:Norgestrel / Q000008:administration & dosage*; D010053:Ovary / Q000187:drug effects*; D010060:Ovulation / Q000187:drug effects; D011897:Random Allocation; D012738:Sex Hormone-Binding Globulin / Q000032:analysis
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003280:Contraceptives, Oral, Synthetic; D012738:Sex Hormone-Binding Globulin; D009644:Norgestrel; D004997:Ethinyl Estradiol; D016912:Levonorgestrel